Bug Crashed

[DaDevGuy]

[10:25:27.010] [Server thread/CRITICAL]: ReflectionException: "Class "_64FF00\PurePerms\event\PPGroupChangedEvent" does not exist" (-1) in "pmsrc/src/plugin/PluginManager" at line 522
--- Stack trace ---
#0 pmsrc/src/plugin/PluginManager(522): ReflectionClass->__construct(string[43] _64FF00\PurePerms\event\PPGroupChangedEvent)
#1 pmsrc/src/plugin/PluginManager(544): pocketmine\plugin\PluginManager->getEventsHandledBy(object ReflectionMethod#33120)
#2 plugins/PurePermsScore.phar/src/Ifera/PurePermsScore/Main(20): pocketmine\plugin\PluginManager->registerEvents(object Ifera\PurePermsScore\listeners\EventListener#33124, object Ifera\PurePermsScore\Main#25085)
#3 pmsrc/src/plugin/PluginBase(137): Ifera\PurePermsScore\Main->onEnable()
#4 pmsrc/src/plugin/PluginManager(445): pocketmine\plugin\PluginBase->onEnableStateChange(true)
#5 pmsrc/src/Server(1386): pocketmine\plugin\PluginManager->enablePlugin(object Ifera\PurePermsScore\Main#25085)
#6 pmsrc/src/Server(1012): pocketmine\Server->enablePlugins(object pocketmine\plugin\PluginEnableOrder#24904)
#7 pmsrc/src/PocketMine(304): pocketmine\Server->__construct(object BaseClassLoader#2, object pocketmine\utils\MainLogger#3, string[16] /home/container/, string[24] /home/container/plugins/)
#8 pmsrc/src/PocketMine(327): pocketmine\server()
#9 pmsrc(11): require(string[60] phar:///home/container/PocketMine-MP.phar/src/PocketMine.php)
--- End of exception information ---