Back end error, there is no abnormal response in the game

[yanaex]

Issue description

Back end error, normal game,Ocd can't endure,I'm a perfectionist.

OS and versions

• FNPC Verison:latest
• PHP:7.0.8
• OS:Liunx CenOS 6.5

Crashdump, backtrace, Plugins list or other files

"Unable to handle events 'pocketmine\event\entity\EntityLevelChangeEvent' on 'FNPC v1.1.6'：Undefined class constant 'pocketmine\network\protocol\Info::REMOVE_PLAYER_PACKET' on FNPC\Main "
Error: "Undefined class constant 'pocketmine\network\protocol\Info::REMOVE_PLAYER_PACKET'" (EXCEPTION) in "/src/pocketmine/event/Timings" at line 251