[1.12.2 Server Crash java.util.ConcurrentModificationException]

My Server crashes over and over again altough my Server has 10 GB RAM and is only using 4 GB of it.

This mostly accures while someone is in the twilight forest but I'm not sure if it really is because of this mod.

 

Full crash report here: https://pastebin.com/kJUV4paS

 

Looking forward for any help and advice

 

[Mod Server stuck in Startup after Mod Update]

Hi so I wanted to update the Mod on my Server (Advent of Ascencion) from AoA 3.0.2 to AoA 3.1.2b, BUT its not working

 

let me explain, so I have the new mod in my mods folder, works completly fine in singleplayer, its also uploaded to my server, just replaced the file and then startet it BUT

its not starting at all its stuck in starting and these messages pop up on the console:

 

https://pastebin.com/TFXaV1DZ

 

couldnt find any particular solutions for my problem on the net. Please tell me this is a common mistake I made or something, if so please correct me I really need help

 

thanks

[1.12.2 startup crash]

Hello,

 

My own modpack keeps crashing and I don't know why.. I really need help, crash report down below

 

Full crash report: https://pastebin.com/tLpAg0NC