I'm using the Little Tiles version 1.5.10 and Complementary Shaders 4.0.2
I also tried with Sildurs Vibrant 1.29 High and the same problem happened.

I'm not using the latest Little Tiles version for 1.12.2 (v1.5.15) because the doors seem to glitch a lot in that version from my experience (door duplicates when opening and I can't seem to break them. A message in chat appears, saying "entity not found").

I've attached the crash report.

crash-2021-07-15_12.31.06-client.txt

I have searched through some of the closed issues and found one that perfectly fit with mine. The issue was solved, and the problem was Valkyrien Skies, which is incompatible.

Yeah, all of the 1.12.2 versions had the same problem.

I'll try using different versions for Little Tiles, but any help would be appreciated!