Modpack version:
2.1.1

Java version:
1.8.0_291

Description:
Server crashed when one of the players attempted to enter nether

When did the crash happen?
During chunk generation of the nether

Steps to reproduce:

1. Get into the world
2. Enter nether

Minecraft crash report:
https://pastebin.com/R5VYXhrP
(You can attach any number of them, but please describe when each of them occurred.)

How much RAM did you dedicate to your client and how much RAM does your PC have?
Server has 8GB of ram.
Screenshots:

Additional context:
This does not happen for every player that enters the nether.

Closed and marked as duplicate of #158, please update to 2.2.0 and see if it occurs again.

are you sure this is a duplicate? #158 is caused by recurrent complex, this one is caused by better nether.

should still test with the latest version before submitting issues

The Better Nether generation could be pretty intense, so make sure the server CPU isn't occupied with too many other things during the initial generation.

Reading the crash report, it seems a Better Nether City took way longer to generate than expected. Try to set the server tick time to -1 (or alternatively just a much larger than base value) in server.properties.

Yea I tried making server tick longer and that seem to do the job.