diff --git a/src/world/sound/AnvilBreakSound.php b/src/world/sound/AnvilBreakSound.php
index 9da378b35..cde91af4c 100644
--- a/src/world/sound/AnvilBreakSound.php
+++ b/src/world/sound/AnvilBreakSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class AnvilBreakSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelEventPacket::create(LevelEventPacket::EVENT_SOUND_ANVIL_BREAK, 0, $pos)];
 	}
 }
diff --git a/src/world/sound/AnvilFallSound.php b/src/world/sound/AnvilFallSound.php
index 7abf3f6ce..3ef6cc61e 100644
--- a/src/world/sound/AnvilFallSound.php
+++ b/src/world/sound/AnvilFallSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class AnvilFallSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelEventPacket::create(LevelEventPacket::EVENT_SOUND_ANVIL_FALL, 0, $pos)];
 	}
 }
diff --git a/src/world/sound/AnvilUseSound.php b/src/world/sound/AnvilUseSound.php
index 93c0b64ee..99beb8b0e 100644
--- a/src/world/sound/AnvilUseSound.php
+++ b/src/world/sound/AnvilUseSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class AnvilUseSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelEventPacket::create(LevelEventPacket::EVENT_SOUND_ANVIL_USE, 0, $pos)];
 	}
 }
diff --git a/src/world/sound/ArrowHitSound.php b/src/world/sound/ArrowHitSound.php
index cb89dbc51..4b1d9da58 100644
--- a/src/world/sound/ArrowHitSound.php
+++ b/src/world/sound/ArrowHitSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class ArrowHitSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_BOW_HIT, $pos, false)];
 	}
 }
diff --git a/src/world/sound/BarrelCloseSound.php b/src/world/sound/BarrelCloseSound.php
index 6adb76093..fa673a938 100644
--- a/src/world/sound/BarrelCloseSound.php
+++ b/src/world/sound/BarrelCloseSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class BarrelCloseSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_BLOCK_BARREL_CLOSE, $pos, false)];
 	}
 }
diff --git a/src/world/sound/BarrelOpenSound.php b/src/world/sound/BarrelOpenSound.php
index 04edd7365..ed8a1a4df 100644
--- a/src/world/sound/BarrelOpenSound.php
+++ b/src/world/sound/BarrelOpenSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class BarrelOpenSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_BLOCK_BARREL_OPEN, $pos, false)];
 	}
 }
diff --git a/src/world/sound/BellRingSound.php b/src/world/sound/BellRingSound.php
index af96e7f09..c14b63d68 100644
--- a/src/world/sound/BellRingSound.php
+++ b/src/world/sound/BellRingSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 final class BellRingSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_BLOCK_BELL_HIT, $pos, false)];
 	}
 }
diff --git a/src/world/sound/BlazeShootSound.php b/src/world/sound/BlazeShootSound.php
index 3924784d0..00f772bbe 100644
--- a/src/world/sound/BlazeShootSound.php
+++ b/src/world/sound/BlazeShootSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class BlazeShootSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelEventPacket::create(LevelEventPacket::EVENT_SOUND_BLAZE_SHOOT, 0, $pos)];
 	}
 }
diff --git a/src/world/sound/BlockBreakSound.php b/src/world/sound/BlockBreakSound.php
index 041664cc8..99cac4c7b 100644
--- a/src/world/sound/BlockBreakSound.php
+++ b/src/world/sound/BlockBreakSound.php
@@ -37,7 +37,7 @@ class BlockBreakSound implements Sound{
 		$this->block = $block;
 	}
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_BREAK, $pos, false, RuntimeBlockMapping::getInstance()->toRuntimeId($this->block->getFullId()))];
 	}
 }
diff --git a/src/world/sound/BlockPlaceSound.php b/src/world/sound/BlockPlaceSound.php
index 0c8967469..7a95b2222 100644
--- a/src/world/sound/BlockPlaceSound.php
+++ b/src/world/sound/BlockPlaceSound.php
@@ -37,7 +37,7 @@ class BlockPlaceSound implements Sound{
 		$this->block = $block;
 	}
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_PLACE, $pos, false, RuntimeBlockMapping::getInstance()->toRuntimeId($this->block->getFullId()))];
 	}
 }
diff --git a/src/world/sound/BlockPunchSound.php b/src/world/sound/BlockPunchSound.php
index 009e1a754..51093522e 100644
--- a/src/world/sound/BlockPunchSound.php
+++ b/src/world/sound/BlockPunchSound.php
@@ -40,7 +40,7 @@ class BlockPunchSound implements Sound{
 		$this->block = $block;
 	}
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(
 			LevelSoundEventPacket::SOUND_HIT,
 			$pos,
diff --git a/src/world/sound/BowShootSound.php b/src/world/sound/BowShootSound.php
index 22b65cac6..abdb8169c 100644
--- a/src/world/sound/BowShootSound.php
+++ b/src/world/sound/BowShootSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class BowShootSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_BOW, $pos, false)];
 	}
 }
diff --git a/src/world/sound/BucketEmptyLavaSound.php b/src/world/sound/BucketEmptyLavaSound.php
index d0f66e7c1..99241daf1 100644
--- a/src/world/sound/BucketEmptyLavaSound.php
+++ b/src/world/sound/BucketEmptyLavaSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class BucketEmptyLavaSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_BUCKET_EMPTY_LAVA, $pos, false)];
 	}
 }
diff --git a/src/world/sound/BucketEmptyWaterSound.php b/src/world/sound/BucketEmptyWaterSound.php
index af4dec6e2..087675aa9 100644
--- a/src/world/sound/BucketEmptyWaterSound.php
+++ b/src/world/sound/BucketEmptyWaterSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class BucketEmptyWaterSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_BUCKET_EMPTY_WATER, $pos, false)];
 	}
 }
diff --git a/src/world/sound/BucketFillLavaSound.php b/src/world/sound/BucketFillLavaSound.php
index 01d4edb09..d4df3ef67 100644
--- a/src/world/sound/BucketFillLavaSound.php
+++ b/src/world/sound/BucketFillLavaSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class BucketFillLavaSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_BUCKET_FILL_LAVA, $pos, false)];
 	}
 }
diff --git a/src/world/sound/BucketFillWaterSound.php b/src/world/sound/BucketFillWaterSound.php
index cdb126c7c..638922413 100644
--- a/src/world/sound/BucketFillWaterSound.php
+++ b/src/world/sound/BucketFillWaterSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class BucketFillWaterSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_BUCKET_FILL_WATER, $pos, false)];
 	}
 }
diff --git a/src/world/sound/ChestCloseSound.php b/src/world/sound/ChestCloseSound.php
index 1738ed81f..2ccaaa035 100644
--- a/src/world/sound/ChestCloseSound.php
+++ b/src/world/sound/ChestCloseSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class ChestCloseSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_CHEST_CLOSED, $pos, false)];
 	}
 }
diff --git a/src/world/sound/ChestOpenSound.php b/src/world/sound/ChestOpenSound.php
index dd7bb6a14..ee8c9313b 100644
--- a/src/world/sound/ChestOpenSound.php
+++ b/src/world/sound/ChestOpenSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class ChestOpenSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_CHEST_OPEN, $pos, false)];
 	}
 }
diff --git a/src/world/sound/ClickSound.php b/src/world/sound/ClickSound.php
index dad9e325a..db472b292 100644
--- a/src/world/sound/ClickSound.php
+++ b/src/world/sound/ClickSound.php
@@ -39,7 +39,7 @@ class ClickSound implements Sound{
 		return $this->pitch;
 	}
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelEventPacket::create(LevelEventPacket::EVENT_SOUND_CLICK, (int) ($this->pitch * 1000), $pos)];
 	}
 }
diff --git a/src/world/sound/DoorBumpSound.php b/src/world/sound/DoorBumpSound.php
index 2d13b0ad8..239401637 100644
--- a/src/world/sound/DoorBumpSound.php
+++ b/src/world/sound/DoorBumpSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class DoorBumpSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelEventPacket::create(LevelEventPacket::EVENT_SOUND_DOOR_BUMP, 0, $pos)];
 	}
 }
diff --git a/src/world/sound/DoorCrashSound.php b/src/world/sound/DoorCrashSound.php
index fa9524a74..6f3a6cbe0 100644
--- a/src/world/sound/DoorCrashSound.php
+++ b/src/world/sound/DoorCrashSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class DoorCrashSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelEventPacket::create(LevelEventPacket::EVENT_SOUND_DOOR_CRASH, 0, $pos)];
 	}
 }
diff --git a/src/world/sound/DoorSound.php b/src/world/sound/DoorSound.php
index 9eca4181d..b3e4addf9 100644
--- a/src/world/sound/DoorSound.php
+++ b/src/world/sound/DoorSound.php
@@ -39,7 +39,7 @@ class DoorSound implements Sound{
 		return $this->pitch;
 	}
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelEventPacket::create(LevelEventPacket::EVENT_SOUND_DOOR, (int) ($this->pitch * 1000), $pos)];
 	}
 }
diff --git a/src/world/sound/EnderChestCloseSound.php b/src/world/sound/EnderChestCloseSound.php
index d016a3ae5..4292dec35 100644
--- a/src/world/sound/EnderChestCloseSound.php
+++ b/src/world/sound/EnderChestCloseSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class EnderChestCloseSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_ENDERCHEST_CLOSED, $pos, false)];
 	}
 }
diff --git a/src/world/sound/EnderChestOpenSound.php b/src/world/sound/EnderChestOpenSound.php
index b2a664dd3..ab1894450 100644
--- a/src/world/sound/EnderChestOpenSound.php
+++ b/src/world/sound/EnderChestOpenSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class EnderChestOpenSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_ENDERCHEST_OPEN, $pos, false)];
 	}
 }
diff --git a/src/world/sound/EndermanTeleportSound.php b/src/world/sound/EndermanTeleportSound.php
index 544ffcd21..e2f3f03e8 100644
--- a/src/world/sound/EndermanTeleportSound.php
+++ b/src/world/sound/EndermanTeleportSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class EndermanTeleportSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelEventPacket::create(LevelEventPacket::EVENT_SOUND_ENDERMAN_TELEPORT, 0, $pos)];
 	}
 }
diff --git a/src/world/sound/EntityAttackNoDamageSound.php b/src/world/sound/EntityAttackNoDamageSound.php
index 0b2fb0cff..2ab77a241 100644
--- a/src/world/sound/EntityAttackNoDamageSound.php
+++ b/src/world/sound/EntityAttackNoDamageSound.php
@@ -31,7 +31,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
  */
 class EntityAttackNoDamageSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::create(
 			LevelSoundEventPacket::SOUND_ATTACK_NODAMAGE,
 			$pos,
diff --git a/src/world/sound/EntityAttackSound.php b/src/world/sound/EntityAttackSound.php
index d7fd63b7b..ecf39a888 100644
--- a/src/world/sound/EntityAttackSound.php
+++ b/src/world/sound/EntityAttackSound.php
@@ -31,7 +31,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
  */
 class EntityAttackSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::create(
 			LevelSoundEventPacket::SOUND_ATTACK_STRONG, //TODO: seems like ATTACK is dysfunctional
 			$pos,
diff --git a/src/world/sound/EntityLandSound.php b/src/world/sound/EntityLandSound.php
index 7871082bb..38ba283fc 100644
--- a/src/world/sound/EntityLandSound.php
+++ b/src/world/sound/EntityLandSound.php
@@ -44,7 +44,7 @@ class EntityLandSound implements Sound{
 		$this->blockLandedOn = $blockLandedOn;
 	}
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::create(
 			LevelSoundEventPacket::SOUND_LAND,
 			$pos,
diff --git a/src/world/sound/EntityLongFallSound.php b/src/world/sound/EntityLongFallSound.php
index 88246f846..1d0a07f40 100644
--- a/src/world/sound/EntityLongFallSound.php
+++ b/src/world/sound/EntityLongFallSound.php
@@ -40,7 +40,7 @@ class EntityLongFallSound implements Sound{
 		$this->entity = $entity;
 	}
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::create(
 			LevelSoundEventPacket::SOUND_FALL_BIG,
 			$pos,
diff --git a/src/world/sound/EntityShortFallSound.php b/src/world/sound/EntityShortFallSound.php
index fcacd797e..2f64cc269 100644
--- a/src/world/sound/EntityShortFallSound.php
+++ b/src/world/sound/EntityShortFallSound.php
@@ -39,7 +39,7 @@ class EntityShortFallSound implements Sound{
 		$this->entity = $entity;
 	}
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::create(
 			LevelSoundEventPacket::SOUND_FALL_SMALL,
 			$pos,
diff --git a/src/world/sound/ExplodeSound.php b/src/world/sound/ExplodeSound.php
index 9dfcd19f8..1f2db9c89 100644
--- a/src/world/sound/ExplodeSound.php
+++ b/src/world/sound/ExplodeSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class ExplodeSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_EXPLODE, $pos, false)];
 	}
 }
diff --git a/src/world/sound/FireExtinguishSound.php b/src/world/sound/FireExtinguishSound.php
index e9f7e3097..255e821f9 100644
--- a/src/world/sound/FireExtinguishSound.php
+++ b/src/world/sound/FireExtinguishSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 final class FireExtinguishSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_EXTINGUISH_FIRE, $pos, false)];
 	}
 }
diff --git a/src/world/sound/FizzSound.php b/src/world/sound/FizzSound.php
index 0e7b42ffb..67be8db44 100644
--- a/src/world/sound/FizzSound.php
+++ b/src/world/sound/FizzSound.php
@@ -39,7 +39,7 @@ class FizzSound implements Sound{
 		return $this->pitch;
 	}
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelEventPacket::create(LevelEventPacket::EVENT_SOUND_FIZZ, (int) ($this->pitch * 1000), $pos)];
 	}
 }
diff --git a/src/world/sound/FlintSteelSound.php b/src/world/sound/FlintSteelSound.php
index 15ff96a28..4569ed510 100644
--- a/src/world/sound/FlintSteelSound.php
+++ b/src/world/sound/FlintSteelSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class FlintSteelSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_IGNITE, $pos, false)];
 	}
 }
diff --git a/src/world/sound/GhastShootSound.php b/src/world/sound/GhastShootSound.php
index 40f6a47cc..e7cb550ff 100644
--- a/src/world/sound/GhastShootSound.php
+++ b/src/world/sound/GhastShootSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class GhastShootSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelEventPacket::create(LevelEventPacket::EVENT_SOUND_GHAST_SHOOT, 0, $pos)];
 	}
 }
diff --git a/src/world/sound/GhastSound.php b/src/world/sound/GhastSound.php
index b49a9c374..2e707d3db 100644
--- a/src/world/sound/GhastSound.php
+++ b/src/world/sound/GhastSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class GhastSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelEventPacket::create(LevelEventPacket::EVENT_SOUND_GHAST, 0, $pos)];
 	}
 }
diff --git a/src/world/sound/IgniteSound.php b/src/world/sound/IgniteSound.php
index dd72342da..1f1e88703 100644
--- a/src/world/sound/IgniteSound.php
+++ b/src/world/sound/IgniteSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class IgniteSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelEventPacket::create(LevelEventPacket::EVENT_SOUND_IGNITE, 0, $pos)];
 	}
 }
diff --git a/src/world/sound/ItemBreakSound.php b/src/world/sound/ItemBreakSound.php
index 0b7f07435..c2329ce12 100644
--- a/src/world/sound/ItemBreakSound.php
+++ b/src/world/sound/ItemBreakSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class ItemBreakSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_BREAK, $pos, false)];
 	}
 }
diff --git a/src/world/sound/LaunchSound.php b/src/world/sound/LaunchSound.php
index e6772f1c9..af8b02041 100644
--- a/src/world/sound/LaunchSound.php
+++ b/src/world/sound/LaunchSound.php
@@ -39,7 +39,7 @@ class LaunchSound implements Sound{
 		return $this->pitch;
 	}
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelEventPacket::create(LevelEventPacket::EVENT_SOUND_SHOOT, (int) ($this->pitch * 1000), $pos)];
 	}
 }
diff --git a/src/world/sound/NoteSound.php b/src/world/sound/NoteSound.php
index e84c736b0..7d2bdef42 100644
--- a/src/world/sound/NoteSound.php
+++ b/src/world/sound/NoteSound.php
@@ -41,7 +41,7 @@ class NoteSound implements Sound{
 		$this->note = $note;
 	}
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_NOTE, $pos, false, ($this->instrument->getMagicNumber() << 8) | $this->note)];
 	}
 }
diff --git a/src/world/sound/PaintingPlaceSound.php b/src/world/sound/PaintingPlaceSound.php
index c836e0842..6d9a7ebe3 100644
--- a/src/world/sound/PaintingPlaceSound.php
+++ b/src/world/sound/PaintingPlaceSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class PaintingPlaceSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		//item frame and painting have the same sound
 		return [LevelEventPacket::create(LevelEventPacket::EVENT_SOUND_ITEMFRAME_PLACE, 0, $pos)];
 	}
diff --git a/src/world/sound/PopSound.php b/src/world/sound/PopSound.php
index 5bce1145f..421018333 100644
--- a/src/world/sound/PopSound.php
+++ b/src/world/sound/PopSound.php
@@ -39,7 +39,7 @@ class PopSound implements Sound{
 		return $this->pitch;
 	}
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelEventPacket::create(LevelEventPacket::EVENT_SOUND_POP, (int) ($this->pitch * 1000), $pos)];
 	}
 }
diff --git a/src/world/sound/PotionSplashSound.php b/src/world/sound/PotionSplashSound.php
index efde99b25..2547f2aee 100644
--- a/src/world/sound/PotionSplashSound.php
+++ b/src/world/sound/PotionSplashSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class PotionSplashSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_GLASS, $pos, false)];
 	}
 }
diff --git a/src/world/sound/RecordSound.php b/src/world/sound/RecordSound.php
index 99e781db9..57051d5b6 100644
--- a/src/world/sound/RecordSound.php
+++ b/src/world/sound/RecordSound.php
@@ -36,7 +36,7 @@ class RecordSound implements Sound{
 		$this->recordType = $recordType;
 	}
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound($this->recordType->getSoundId(), $pos, false)];
 	}
 }
diff --git a/src/world/sound/RecordStopSound.php b/src/world/sound/RecordStopSound.php
index 2bdd0e611..9e331a9ff 100644
--- a/src/world/sound/RecordStopSound.php
+++ b/src/world/sound/RecordStopSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class RecordStopSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_STOP_RECORD, $pos, false)];
 	}
 }
diff --git a/src/world/sound/RedstonePowerOffSound.php b/src/world/sound/RedstonePowerOffSound.php
index 5f0ec7280..b07c723b4 100644
--- a/src/world/sound/RedstonePowerOffSound.php
+++ b/src/world/sound/RedstonePowerOffSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class RedstonePowerOffSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_POWER_OFF, $pos, false)];
 	}
 }
diff --git a/src/world/sound/RedstonePowerOnSound.php b/src/world/sound/RedstonePowerOnSound.php
index e260d1166..d71f6b998 100644
--- a/src/world/sound/RedstonePowerOnSound.php
+++ b/src/world/sound/RedstonePowerOnSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class RedstonePowerOnSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_POWER_ON, $pos, false)];
 	}
 }
diff --git a/src/world/sound/ShulkerBoxCloseSound.php b/src/world/sound/ShulkerBoxCloseSound.php
index 2e8e758a4..ea7a630c3 100644
--- a/src/world/sound/ShulkerBoxCloseSound.php
+++ b/src/world/sound/ShulkerBoxCloseSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class ShulkerBoxCloseSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_SHULKERBOX_CLOSED, $pos, false)];
 	}
 }
diff --git a/src/world/sound/ShulkerBoxOpenSound.php b/src/world/sound/ShulkerBoxOpenSound.php
index a5dacea08..491b5dace 100644
--- a/src/world/sound/ShulkerBoxOpenSound.php
+++ b/src/world/sound/ShulkerBoxOpenSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class ShulkerBoxOpenSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_SHULKERBOX_OPEN, $pos, false)];
 	}
 }
diff --git a/src/world/sound/Sound.php b/src/world/sound/Sound.php
index 84121db6a..19074e256 100644
--- a/src/world/sound/Sound.php
+++ b/src/world/sound/Sound.php
@@ -31,5 +31,5 @@ interface Sound{
 	/**
 	 * @return ClientboundPacket[]
 	 */
-	public function encode(?Vector3 $pos) : array;
+	public function encode(Vector3 $pos) : array;
 }
diff --git a/src/world/sound/ThrowSound.php b/src/world/sound/ThrowSound.php
index 1e3297a65..b24474e5f 100644
--- a/src/world/sound/ThrowSound.php
+++ b/src/world/sound/ThrowSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelSoundEventPacket;
 
 class ThrowSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelSoundEventPacket::create(LevelSoundEventPacket::SOUND_THROW, $pos, -1, "minecraft:player", false, false)];
 	}
 }
diff --git a/src/world/sound/TotemUseSound.php b/src/world/sound/TotemUseSound.php
index baa04275c..561d9c41a 100644
--- a/src/world/sound/TotemUseSound.php
+++ b/src/world/sound/TotemUseSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class TotemUseSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelEventPacket::create(LevelEventPacket::EVENT_SOUND_TOTEM, 0, $pos)];
 	}
 }
diff --git a/src/world/sound/XpCollectSound.php b/src/world/sound/XpCollectSound.php
index 71a304f30..655835069 100644
--- a/src/world/sound/XpCollectSound.php
+++ b/src/world/sound/XpCollectSound.php
@@ -28,7 +28,7 @@ use pocketmine\network\mcpe\protocol\LevelEventPacket;
 
 class XpCollectSound implements Sound{
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		return [LevelEventPacket::create(LevelEventPacket::EVENT_SOUND_ORB, 0, $pos)];
 	}
 }
diff --git a/src/world/sound/XpLevelUpSound.php b/src/world/sound/XpLevelUpSound.php
index aa44a5ff6..8334b7bea 100644
--- a/src/world/sound/XpLevelUpSound.php
+++ b/src/world/sound/XpLevelUpSound.php
@@ -41,7 +41,7 @@ class XpLevelUpSound implements Sound{
 		return $this->xpLevel;
 	}
 
-	public function encode(?Vector3 $pos) : array{
+	public function encode(Vector3 $pos) : array{
 		//No idea why such odd numbers, but this works...
 		//TODO: check arbitrary volume
 		return [LevelSoundEventPacket::nonActorSound(LevelSoundEventPacket::SOUND_LEVELUP, $pos, false, 0x10000000 * intdiv(min(30, $this->xpLevel), 5))];