error

[Crypt97]

13:09:22 <Server thread/Critical> ErrorException: "ZipArchive::extractTo(): Invalid or uninitialized Zip object" (EXCEPTION) in "plugins/SkyWars/src/vixikhd/skywars/arena/MapReset" at line 89
13:09:22 <Server thread/Debug> #0 (): pocketmine\utils\Utils::errorExceptionHandler(integer 2, string ZipArchive::extractTo(): Invalid or uninitialized Zip object, string C:\Users\crypt\Desktop\PocketMine\plugins\SkyWars\src\vixikhd\skywars\arena\MapReset.php, integer 89, array Array())
13:09:22 <Server thread/Debug> #1 plugins/SkyWars/src/vixikhd/skywars/arena/MapReset(89): ZipArchive->extractTo(string C:\Users\crypt\Desktop\PocketMine\worlds)
13:09:22 <Server thread/Debug> #2 plugins/SkyWars/src/vixikhd/skywars/arena/Arena(471): vixikhd\skywars\arena\MapReset->loadMap(string skywars)
13:09:22 <Server thread/Debug> #3 plugins/SkyWars/src/vixikhd/skywars/arena/Arena(508): vixikhd\skywars\arena\Arena->loadArena()
13:09:22 <Server thread/Debug> #4 plugins/SkyWars/src/vixikhd/skywars/SkyWars(149): vixikhd\skywars\arena\Arena->enable()
13:09:22 <Server thread/Debug> #5 src/pocketmine/plugin/MethodEventExecutor(38): vixikhd\skywars\SkyWars->onChat(pocketmine\event\player\PlayerChatEvent object)
13:09:22 <Server thread/Debug> #6 src/pocketmine/plugin/RegisteredListener(98): pocketmine\plugin\MethodEventExecutor->execute(vixikhd\skywars\SkyWars object, pocketmine\event\player\PlayerChatEvent object)
13:09:22 <Server thread/Debug> #7 src/pocketmine/event/Event(99): pocketmine\plugin\RegisteredListener->callEvent(pocketmine\event\player\PlayerChatEvent object)
13:09:22 <Server thread/Debug> #8 src/pocketmine/Player(2368): pocketmine\event\Event->call()
13:09:22 <Server thread/Debug> #9 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(137): pocketmine\Player->chat(string enable)
13:09:22 <Server thread/Debug> #10 src/pocketmine/network/mcpe/protocol/TextPacket(124): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleText(pocketmine\network\mcpe\protocol\TextPacket object)
13:09:22 <Server thread/Debug> #11 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(116): pocketmine\network\mcpe\protocol\TextPacket->handle(pocketmine\network\mcpe\PlayerNetworkSessionAdapter object)
13:09:22 <Server thread/Debug> #12 src/pocketmine/network/mcpe/protocol/BatchPacket(127): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleDataPacket(pocketmine\network\mcpe\protocol\TextPacket object)
13:09:22 <Server thread/Debug> #13 src/pocketmine/network/mcpe/PlayerNetworkSessionAdapter(116): pocketmine\network\mcpe\protocol\BatchPacket->handle(pocketmine\network\mcpe\PlayerNetworkSessionAdapter object)
13:09:22 <Server thread/Debug> #14 src/pocketmine/Player(3378): pocketmine\network\mcpe\PlayerNetworkSessionAdapter->handleDataPacket(pocketmine\network\mcpe\protocol\BatchPacket object)
13:09:22 <Server thread/Debug> #15 src/pocketmine/network/mcpe/RakLibInterface(169): pocketmine\Player->handleDataPacket(pocketmine\network\mcpe\protocol\BatchPacket object)
13:09:22 <Server thread/Debug> #16 vendor/pocketmine/raklib/src/server/ServerHandler(99): pocketmine\network\mcpe\RakLibInterface->handleEncapsulated(string 46.139.254.142 54881, raklib\protocol\EncapsulatedPacket object, integer 0)
13:09:22 <Server thread/Debug> #17 src/pocketmine/network/mcpe/RakLibInterface(109): raklib\server\ServerHandler->handlePacket()
13:09:22 <Server thread/Debug> #18 src/pocketmine/network/mcpe/RakLibInterface(99): pocketmine\network\mcpe\RakLibInterface->process()
13:09:22 <Server thread/Debug> #19 vendor/pocketmine/snooze/src/SleeperHandler(123): pocketmine\network\mcpe\RakLibInterface->pocketmine\network\mcpe\{closure}()
13:09:22 <Server thread/Debug> #20 vendor/pocketmine/snooze/src/SleeperHandler(85): pocketmine\snooze\SleeperHandler->processNotifications()
13:09:22 <Server thread/Debug> #21 src/pocketmine/Server(2392): pocketmine\snooze\SleeperHandler->sleepUntil(double 1560082162.5126)
13:09:22 <Server thread/Debug> #22 src/pocketmine/Server(2297): pocketmine\Server->tickProcessor()
13:09:22 <Server thread/Debug> #23 src/pocketmine/Server(1875): pocketmine\Server->start()
13:09:22 <Server thread/Debug> #24 src/pocketmine/PocketMine(266): pocketmine\Server->__construct(BaseClassLoader object, pocketmine\utils\MainLogger object, string C:\Users\crypt\Desktop\PocketMine\, string C:\Users\crypt\Desktop\PocketMine\plugins\)
13:09:22 <Server thread/Info> Crypthu elhagyta a játékot
13:09:22 <Server thread/Info> Crypthu[/x:54881] logged out due to Internal server error
13:09:22 <RakLibServer thread/Notice> Blocked x for 5 seconds
13:09:23 <Server thread/Critical> Error: "Call to a member function getFolderName() on null" (EXCEPTION) in "plugins/SkyWars/src/vixikhd/skywars/arena/ArenaScheduler" at line 167
13:09:23 <Server thread/Debug> #0 plugins/SkyWars/src/vixikhd/skywars/arena/ArenaScheduler(65): vixikhd\skywars\arena\ArenaScheduler->reloadSign()
13:09:23 <Server thread/Debug> #1 src/pocketmine/scheduler/TaskHandler(159): vixikhd\skywars\arena\ArenaScheduler->onRun(integer 7426)
13:09:23 <Server thread/Debug> #2 src/pocketmine/scheduler/TaskScheduler(199): pocketmine\scheduler\TaskHandler->run(integer 7426)
13:09:23 <Server thread/Debug> #3 src/pocketmine/plugin/PluginManager(688): pocketmine\scheduler\TaskScheduler->mainThreadHeartbeat(integer 7426)
13:09:23 <Server thread/Debug> #4 src/pocketmine/Server(2601): pocketmine\plugin\PluginManager->tickSchedulers(integer 7426)
13:09:23 <Server thread/Debug> #5 src/pocketmine/Server(2389): pocketmine\Server->tick()
13:09:23 <Server thread/Debug> #6 src/pocketmine/Server(2297): pocketmine\Server->tickProcessor()
13:09:23 <Server thread/Debug> #7 src/pocketmine/Server(1875): pocketmine\Server->start()
13:09:23 <Server thread/Debug> #8 src/pocketmine/PocketMine(266): pocketmine\Server->__construct(BaseClassLoader object, pocketmine\utils\MainLogger object, string C:\Users\crypt\Desktop\PocketMine\, string C:\Users\crypt\Desktop\PocketMine\plugins\)
13:09:23 <Server thread/Emergency> An unrecoverable error has occurred and the server has crashed. Creating a crash dump
13:09:23 <Server thread/Emergency> Please upload the "C:\Users\crypt\Desktop\PocketMine\crashdumps/Sun_Jun_9-13.09.23-BST_2019.log" file to the Crash Archive and submit the link to the Bug Reporting page. Give as much info as you can.

[GamakCZ]

This doesn't seems like PocketMine. Submit issue to PMMP's fork.