Bug Report

How can the crash be reproduced?

Forge 27.0.2
Java JDK 1.8.0_20
JVM Arguements: -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M

Seed: 15082821792

Was exploring the map in creative mode.

Crash Report and Logs

crash-2019-06-29_12.30.14-server.txt

Mod Version

BiomesOPlenty-1.14.3-9.0.0.170-universal

I really don't know much about the various JVM arguments, but it seems like you're only allotting 2 GB to the game? Can you try it without any specialized JVM arguments?

Anyway, there doesn't seem to be a particularly intensive biome in the area the game crashed, so I'm really doubting this has anything to specifically do with BOP.

The default is roughly 100 MB for the JVM without arguments.

Update to forge .60.

Then change -Xmx2G to -Xmx6G (maximum ram)

Don't' t try to load modded minecraft with less then 4 gigs, it used to work with 1.17.10 but versions past that are memory hogs.