• Here is the log (from MultiMC- with modlist)..
  https://paste.ee/p/9XE8Z

It says:
java.lang.RuntimeException: There is no block named "rustic:slate." Fix your block group. at

side note: hope this is not my fault :D

My fault :D

@juraj-hrivnak Hey, let's get this updated in case someone sees it on Google later. Mind sharing how you fixed it?

Of course, sorry :D. The problem was that I disabled the rustic: slate in rustic config. And forgot about it.
It crashed because slate was not loaded!

Thanks! I appreciate that. Come join us on Discord, if you need anything else. I can respond more quickly there.