[13Mar2021 08:14:48.693] [Server thread/ERROR] [net.minecraft.server.MinecraftServer/]: Encountered an unexpected exception
net.minecraft.crash.ReportedException: Exception while updating neighbours
        ...
        at java.lang.Thread.run(Thread.java:834) [?:?]
Caused by: java.lang.StackOverflowError
        at java.lang.invoke.AbstractValidatingLambdaMetafactory.validateMetafactoryArgs(AbstractValidatingLambdaMetafactory.java:287) ~[?:?]
        ...
        at net.minecraft.world.IWorldWriter.func_175655_b(SourceFile:22) ~[?:?]
        at vazkii.quark.content.world.block.SpeleothemBlock.func_220069_a(SpeleothemBlock.java:69) ~[quark:r2.4-308]

Full crash log: https://hatebin.com/ugfqqbqgbk

I'm playing All the mods 6 and have created a RFTools dimensions dim. I started to explore it and when a certain chunk got loaded, the server crashed. I can now no longer join the server as when I join the server crashes again.

Just commenting here to +1 this one. Happens on mine too.

• mc version 1.16.5
• java 11.0.12
• fml 36.2
• forge 36.2.2
• quark r2.4-319
• rftoolsdim 1.16-7.0.15-beta

Hello! Quark's moved to 1.18 now-- unfortunately, this means that (unless your bug is critical and/or game-breaking), we're closing support for issues filed for versions prior to it (e.g. Quark on 1.16).

If your issue still occurs on 1.18, or if your issue happens to be rather critical (e.g. consistently crashing the game with no other mods present), please leave another note or open a new issue. Thanks for your cooperation!