When joining a world with Oculus installed, a crash occurs which is detailed in this report. Note that Rubidium works fine in the pack (ATM6) without it (Although it does have rendering issues with Immersive Engineering)
crash-2022-04-02_14.19.07-client.txt
.

Same error here trying to add to Better Minecraft

I also have the same issue

I also get this issue without any other mods

Update Rubidium https://www.curseforge.com/minecraft/mc-mods/rubidium/files/3728368