diff --git a/src/network/mcpe/convert/RuntimeBlockMapping.php b/src/network/mcpe/convert/RuntimeBlockMapping.php
index 056842172..54002ed50 100644
--- a/src/network/mcpe/convert/RuntimeBlockMapping.php
+++ b/src/network/mcpe/convert/RuntimeBlockMapping.php
@@ -160,7 +160,7 @@ final class RuntimeBlockMapping{
 	/**
 	 * @phpstan-return CacheableNbt<\pocketmine\nbt\tag\ListTag>
 	 */
-	public function getStartGamePaletteCache() : ?CacheableNbt{
+	public function getStartGamePaletteCache() : CacheableNbt{
 		return $this->startGamePaletteCache ?? new CacheableNbt(new ListTag($this->bedrockKnownStates));
 	}
 }
diff --git a/tests/phpstan/configs/l8-baseline.neon b/tests/phpstan/configs/l8-baseline.neon
index 724427da1..4b7cfbd5a 100644
--- a/tests/phpstan/configs/l8-baseline.neon
+++ b/tests/phpstan/configs/l8-baseline.neon
@@ -485,11 +485,6 @@ parameters:
 			count: 1
 			path: ../../../src/network/mcpe/encryption/PrepareEncryptionTask.php
 
-		-
-			message: "#^Property pocketmine\\\\network\\\\mcpe\\\\protocol\\\\StartGamePacket\\:\\:\\$blockTable \\(pocketmine\\\\network\\\\mcpe\\\\protocol\\\\types\\\\CacheableNbt\\<pocketmine\\\\nbt\\\\tag\\\\ListTag\\>\\) does not accept pocketmine\\\\network\\\\mcpe\\\\protocol\\\\types\\\\CacheableNbt\\<pocketmine\\\\nbt\\\\tag\\\\ListTag\\>\\|null\\.$#"
-			count: 1
-			path: ../../../src/network/mcpe/handler/PreSpawnPacketHandler.php
-
 		-
 			message: "#^Property pocketmine\\\\network\\\\mcpe\\\\protocol\\\\LevelSoundEventPacket\\:\\:\\$position \\(pocketmine\\\\math\\\\Vector3\\) does not accept pocketmine\\\\math\\\\Vector3\\|null\\.$#"
 			count: 1