PaperLightingQueue - Server not responding

Hello, recently there has been some crashes due to server not responding.
Always, the first thing in the logs is about lighting. PaperLightingQueue,net.minecraft.server.v1_13_R2.World.updateBrightness(…

Here is the log:

The server is around 11-14tps constanly with ~75users.

Thank you.

It keeps happening everyday, anybody has a clue?

That error has nothing to do with paper, anything that starts with net.minecraft.server.v{something} is coming from the minecraft jar, not the paper jar. I would guess it’s coming from a plugin that’s not compatible with your version of minecraft, but it’s just a guess.