On version 1.16.5

The game crashed whilst rendering overlay
Error: net.minecraftforge.fml.ModLoadingException: Immersive Engineering (immersiveengineering) encountered an error during the done event phase
Exit Code: -1

Saw another thread but no solution was provided.

Crash-log: https://pastebin.com/kYJxDMZF

Optifine is not supported.

Its not only shaders, its also texture packs so I do believe it is more than just optifine?