My problem is if i want to launch it gives this error:
[INFO] laklek[/127.0.0.1:55947] logged in with entity id 10307 at (205.5, 70.50000305175782, 246.5)
[WARNING] Failed to handle packet for laklek/127.0.0.1: java.lang.NullPointerException
java.lang.NullPointerException
at...