Forge 1.12.2 Server Crash

[MystifiedSky]

This is for the modpack Project Ozone 3 the crash happens anywhere from every 5m to ever few hours more often enough shorter times though.

crash-2019-01-29_16.24.46-server.txt

[Cadiboo]

Not sure what mod could be causing it. It could be any mod that modifies blockstates and/or blocks i.e. 95% of mods. It could happen if a mod accesses the minecraft world from another thread. From your crash it seems to happen when leaves are broken, and from you saying it’s random i think it might be from decay. I think that making a (void) test world and filling it with decayable leaves, then attaching a debugger to the server, putting a breakpoint at getDrops and turning up the random tick speed would be the best way to debug what makes the crash happen, unless I’m wrong about the cause of the crash. I don’t see a simple resolution to this issue (if it’s caused by what I think it is).

 

You could try looking through the issues on the mods on the pack and seeing if it has already been reported to one of them.

You should also try removing your coremods and seeing if that fixes your issue.