Server randomly crashed

[justin-eckenweber]

My server randomly crashed with this error:

2022-09-12 [03:05:16.033] [Server thread/CRITICAL]: InvalidArgumentException: "Class slapper\entities\SlapperFallingSand does not exist or is not a class" (EXCEPTION) in "pmsrc/src/utils/Utils" at line 533
--- Stack trace ---
#0 plugins/Slapper.phar/src/slapper/Main(638): pocketmine\utils\Utils::testValidInstance(string[35] slapper\entities\SlapperFallingSand, string[24] slapper\SlapperInterface)
#1 pmsrc/src/command/PluginCommand(50): slapper\Main->onCommand(object pocketmine\player\Player#351351, object pocketmine\command\PluginCommand#28856, string[7] slapper, array[3])
#2 pmsrc/src/command/SimpleCommandMap(205): pocketmine\command\PluginCommand->execute(object pocketmine\player\Player#351351, string[7] slapper, array[5])
#3 pmsrc/src/Server(1446): pocketmine\command\SimpleCommandMap->dispatch(object pocketmine\player\Player#351351, string[38] slapper spawn FallingSand woops i poop)
#4 pmsrc/src/player/Player(1410): pocketmine\Server->dispatchCommand(object pocketmine\player\Player#351351, string[38] slapper spawn FallingSand woops i poop)
#5 pmsrc/src/network/mcpe/handler/InGamePacketHandler(759): pocketmine\player\Player->chat(string[39] /slapper spawn FallingSand woops i poop)
#6 pmsrc/vendor/pocketmine/bedrock-protocol/src/CommandRequestPacket(51): pocketmine\network\mcpe\handler\InGamePacketHandler->handleCommandRequest(object pocketmine\network\mcpe\protocol\CommandRequestPacket#235389)
#7 pmsrc/src/network/mcpe/NetworkSession(392): pocketmine\network\mcpe\protocol\CommandRequestPacket->handle(object pocketmine\network\mcpe\handler\InGamePacketHandler#414252)
#8 pmsrc/src/network/mcpe/NetworkSession(355): pocketmine\network\mcpe\NetworkSession->handleDataPacket(object pocketmine\network\mcpe\protocol\CommandRequestPacket#235389, string[60] M'/slapper spawn FallingSand woops i poop..@j..4.7X..=......)
#9 pmsrc/src/network/mcpe/raklib/RakLibInterface(182): pocketmine\network\mcpe\NetworkSession->handleEncoded(string[110] ..U./.I,(H-R(.H,.SpK....K.N.KQ(../(V.T(...S...0..2..v.vZ..B......DW90t..W......)
#10 pmsrc/vendor/pocketmine/raklib-ipc/src/RakLibToUserThreadMessageReceiver(42): pocketmine\network\mcpe\raklib\RakLibInterface->onPacketReceive(int 7, string[119] .e....kBy$d..C...(.D...Q...........'..,.......B[..1..X.T...7...0r......<.....#.>)
#11 pmsrc/src/network/mcpe/raklib/RakLibInterface(112): raklib\server\ipc\RakLibToUserThreadMessageReceiver->handle(object pocketmine\network\mcpe\raklib\RakLibInterface#102891)
#12 pmsrc/vendor/pocketmine/snooze/src/SleeperHandler(123): pocketmine\network\mcpe\raklib\RakLibInterface->pocketmine\network\mcpe\raklib{closure}()
#13 pmsrc/vendor/pocketmine/snooze/src/SleeperHandler(82): pocketmine\snooze\SleeperHandler->processNotifications()
#14 pmsrc/src/Server(1703): pocketmine\snooze\SleeperHandler->sleepUntil(float 1662944716.04)
#15 pmsrc/src/Server(1063): pocketmine\Server->tickProcessor()
#16 pmsrc/src/PocketMine(305): pocketmine\Server->__construct(object BaseClassLoader#3, object pocketmine\utils\MainLogger#2, string[34] /home/clientservers/server-427629/, string[42] /home/clientservers/server-427629/plugins/)
#17 pmsrc/src/PocketMine(328): pocketmine\server()
#18 pmsrc(11): require(string[71] phar:///home/serversoftwares/PocketMine_1.19.21.phar/src/PocketMine.php)
--- End of exception information ---***