I tried to install BoundingBox mod and got a crash. Then I tried to disable every mod and when I disabled litematica minecraft started normally.
here is crash report: https://pastebin.com/rmhTcjHG

Hi, thanks for the report.

I've taken a look at my code, and the code for Litematica and I don't see how their Mixin class would conflict with mine.

If you disable my mod but leave Litematica does Minecraft work okay?

I've invited @maruohon to comment on this - I don't know if two non-conflicting mixins would trigger an issue that wouldn't exist otherwise.

Thanks for reply

If you disable my mod but leave Litematica does Minecraft work okay?

If I disable your mod and leave litematica enabled it works fine and if I disable litematica and enable your mod works fine too. it only crashes when both mods are enabled

For some reason I was using/"adding" the no-args constructor in my Mixin, instead of extending the one from World. I uploaded a new 1.13.2 build of Litematica to CurseForge, which fixes this crash with BBOR.

thanks!
tried it out and works perfectly
you guys are great :)

Thanks @maruohon for sorting this so quickly! I'm intrigued to know why it only crashed when there were two mixins being applied.