When i ran Oculus and Rudibium together because Oculus said it was a "great pair" so i did that and it crashed on launch.
What it said after crash in the launcher:
The game crashed whilst initializing game
Error: org.spongepowered.asm.mixin.transformer.throwables.MixinTransformerError: An unexpected critical error was encountered

Exit code:-1

Because in Oculus' modpage for mod dependents, it says Embeddium instead of Rubidium. This is because Rubidium is now outdated and already placed in the cemetery just last year.

On the rudibium page it also says about using it