Suddenly can't animate my models anymore because of "multiple parts share the same name"

My models were animatable just yesterday. I didn’t change anything, but when i woke up i just keep getting this error message. None of the keys have the same name. How do i fix this?

And yes, I have a lot of meshparts that are just named “MeshPart” because it’s a big model. But it doesn’t make any sense that i could still animate them yesterday or before?

You cannot have the same name for any descendants you’re animating. It’s quite likely you just forgot.

Change the names and it will work, or group animatable instances into a separate model.

I found out that my animation editor won’t allow a model to have parts with the same name anymore even if they aren’t animatable. Well, i guess i’ll have to rename every single part for now.