Merge branch 'next-minor'

# Conflicts:
#	resources/vanilla
#	src/plugin/PluginBase.php
#	src/plugin/PluginDescription.php
#	src/pocketmine/Player.php
#	src/pocketmine/network/rcon/RCON.php
#	src/pocketmine/network/rcon/RCONInstance.php
#	src/pocketmine/scheduler/AsyncTask.php
#	src/pocketmine/tile/Spawnable.php
#	src/scheduler/AsyncPool.php
#	src/utils/Config.php
#	src/utils/Timezone.php
#	src/utils/UUID.php
#	src/utils/Utils.php
#	src/world/format/io/region/RegionLoader.php

src/plugin/PluginManager.php

@@ -34,6 +34,7 @@ use pocketmine\network\mcpe\protocol\ProtocolInfo;
 use pocketmine\permission\PermissionManager;
 use pocketmine\Server;
 use pocketmine\timings\TimingsHandler;
+use pocketmine\utils\AssumptionFailedError;
 use pocketmine\utils\Utils;
 use function array_intersect;
 use function array_map;
@@ -208,6 +209,7 @@ class PluginManager{
 		shuffle($files); //this prevents plugins implicitly relying on the filesystem name order when they should be using dependency properties
 		foreach($loaders as $loader){
 			foreach($files as $file){
+				if(!is_string($file)) throw new AssumptionFailedError("FilesystemIterator current should be string when using CURRENT_AS_PATHNAME");
 				if(!$loader->canLoadPlugin($file)){
 					continue;
 				}