[4.0.0] OfflinePlayer::getFirstPlayed() does not work

[AndreasHGK]

Issue description

• Expected result: OfflinePlayer::getFirstPlayed() returns the first join date of the (offline) player
• Actual result: OfflinePlayer::getFirstPlayed() throws an exception

Steps to reproduce the issue

1. Call OfflinePlayer::getFirstPlayed() from any offline player.

OS and versions

• PocketMine-MP: 4.0.0+dev (one of the latest commits in the master branch)
• PHP: 7.3
• Server OS: Windows 10
• Game version: Windows 10

Plugins

Plugins (4): DevTools v1.14.0+dev, DEVirion v1.2.5-ALPHA12, Nightfall v1.0.0, FormAPI v1.3.0

• If you remove all plugins, does the issue still occur? Yes (i didn't test this, but i'm 99.9% confident it does.

Crashdump, backtrace or other files

i use my own error catch thing in here so it looks a little different than it does normally

2019-09-03 [19:18:15.068] [Server thread/ERROR]: Expected a tag of type pocketmine\nbt\tag\IntTag, got pocketmine\nbt\tag\LongTag in file phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/vendor/pocketmine/nbt/src/tag/CompoundTag.php at line 100
#0 phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/vendor/pocketmine/nbt/src/tag/CompoundTag.php(187): pocketmine\nbt\tag\CompoundTag->getTag('firstPlayed', 'pocketmine\\nbt\\...')
#1 phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/vendor/pocketmine/nbt/src/tag/CompoundTag.php(233): pocketmine\nbt\tag\CompoundTag->getTagValue('firstPlayed', 'pocketmine\\nbt\\...', NULL, false)
#2 phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/src/player/OfflinePlayer.php(106): pocketmine\nbt\tag\CompoundTag->getInt('firstPlayed')
#3 C:\Users\Andreas\Desktop\prisons\plugins\Nightfall\src\AndreasHGK\Core\command\StatsCommand.php(51): pocketmine\player\OfflinePlayer->getFirstPlayed()
#4 C:\Users\Andreas\Desktop\prisons\plugins\Nightfall\src\AndreasHGK\Core\command\CommandBase.php(47): AndreasHGK\Core\command\StatsCommand->onCommand(Object(pocketmine\player\Player), Object(AndreasHGK\Core\command\CommandBase), 'stats', Array)
#5 phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/src/command/SimpleCommandMap.php(268): AndreasHGK\Core\command\CommandBase->execute(Object(pocketmine\player\Player), 'stats', Array)
#6 phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/src/Server.php(1540): pocketmine\command\SimpleCommandMap->dispatch(Object(pocketmine\player\Player), 'stats megadan20...')
#7 phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/src/player/Player.php(1487): pocketmine\Server->dispatchCommand(Object(pocketmine\player\Player), 'stats megadan20...')
#8 phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/src/network/mcpe/handler/InGamePacketHandler.php(594): pocketmine\player\Player->chat('/stats megadan2...')
#9 phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/src/network/mcpe/protocol/CommandRequestPacket.php(54): pocketmine\network\mcpe\handler\InGamePacketHandler->handleCommandRequest(Object(pocketmine\network\mcpe\protocol\CommandRequestPacket))
#10 phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/src/network/mcpe/NetworkSession.php(349): pocketmine\network\mcpe\protocol\CommandRequestPacket->handle(Object(pocketmine\network\mcpe\handler\InGamePacketHandler))
#11 phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/src/network/mcpe/NetworkSession.php(315): pocketmine\network\mcpe\NetworkSession->handleDataPacket(Object(pocketmine\network\mcpe\protocol\CommandRequestPacket))
#12 phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/src/network/mcpe/raklib/RakLibInterface.php(152): pocketmine\network\mcpe\NetworkSession->handleEncoded('x\xDA\xD3\xF2\x15\xD5/.I,)V\xC8MM...')
#13 phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/vendor/pocketmine/raklib/src/server/ServerHandler.php(102): pocketmine\network\mcpe\raklib\RakLibInterface->handleEncapsulated(0, Object(raklib\protocol\EncapsulatedPacket), 0)
#14 phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/src/network/mcpe/raklib/RakLibInterface.php(96): raklib\server\ServerHandler->handlePacket()
#15 phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/vendor/pocketmine/snooze/src/SleeperHandler.php(123): pocketmine\network\mcpe\raklib\RakLibInterface->pocketmine\network\mcpe\raklib\{closure}()
#16 phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/vendor/pocketmine/snooze/src/SleeperHandler.php(85): pocketmine\snooze\SleeperHandler->processNotifications()
#17 phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/src/Server.php(1765): pocketmine\snooze\SleeperHandler->sleepUntil(1567534695.0823)
#18 phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/src/Server.php(1308): pocketmine\Server->tickProcessor()
#19 phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/src/PocketMine.php(268): pocketmine\Server->__construct(Object(BaseClassLoader), Object(pocketmine\utils\MainLogger), 'C:\\Users\\Andrea...', 'C:\\Users\\Andrea...')
#20 phar://C:/Users/Andreas/Desktop/prisons/PocketMine-MP.phar/src/PocketMine.php(290): pocketmine\server()
#21 C:\Users\Andreas\Desktop\prisons\PocketMine-MP.phar(1): require('phar://C:/Users...')
#22 {main}