Hi everyone,
my server runs on Forge 1.16.4. I wanted to switch to Paper or Spigot (1.16.4 also) so i created a backup and saved my world.
I switched the software, installed BlueMap Plugin, and uploaded my world. When i try to start the server it crashes after some seconds.
Here's the log: https://mclo.gs/aqiIjrC
Can someone please tell me what's going on and how i can fix it?