1.20.1 forge 1.20.1 instance crashing on clicking "singleplayer" button on main menu

[gamy]

since 1.20 minecraft defaults to the world creation screen when you first click on the "singleplayer" button, and this is causing a crash for my instance. for a second or two, the game says "preparing for world creation," then it switches to "saving world" and crashes with exit code -1. this is what the mc launcher gives me on crash "The game crashed whilst mouseclicked event handler Error: java.lang.IllegalStateException: Failed to load registries due to above errors." I've never seen this error before and I'm usually decent at troubleshooting Minecraft, but this is really stumping me. here a pastebin link to my full crash report. https://pastebin.com/myf7Z6wj

[TileEntity]

Make a test just with Forge - without any mods

[gamy]

Running a blank instance works just fine. Im so confused especially since the crash log doesn't specifically point towards any mod 

[gamy]

i pasted the mods into the test instance and I'm getting the same error. everything works fine until I press the "create new world" button. wtf

[TileEntity]

Make a test without Rubidium/Oculus, the Xaero mods, creativecore (and mods requiring it), do_a_barrel_roll and supplementaries