Help, my gltf won't export

I'm trying to export a gltf with multiple animations attached. So far every other one I've made in the past week have worked perfectly, and this one that's having trouble now exported just fine as a static gltf. I tried everything I could think of to fix it, but it keeps throwing up this stupid long trace back error. Can someone explain what I've done wrong? I need this model exported by Sunday and I'm getting really stressed out about it lmao. I'm happy to add a link to download the file if it'll help diagnose my problem.