Not sure how it happen but it looked like it was from this mod

Crash report https://pastebin.com/77QTFuse

Minecraft Version 1.15.2
Forge 31.1.36
minecraft2discord-1.15.2-1.1.5

net.minecraftforge.fml.server.ServerLifecycleHooks.handleServerStopping(ServerLifecycleHooks.java:102)
ml.denis3d.minecraft2discord.Minecraft2Discord.onServerStop(Minecraft2Discord.java:72)
This crash has occured when the server was stopping... If the stop wasn't requested by you it think that the server was crashing and make the discord bot crash too. If I have enough time I will try to handle this error in order to make the real crash message visible.
Perhpas is there more information in the full logs (stacktrace from the real crash)

oh ok and if i can find the right log ill send it.

this one just happen and may be connected https://pastebin.com/3HS11aAw

we need the full server logs, not just the crash report

sorry forgot to close this