I was rebinding the keys and when rebinding the jump key I accidentally unbound it by re-assigning the same key to something else.
Now I can't bind anything, because the jump key is also used to select things.
Is there a way to fix this?
Deleting my savedata didn't work, and I worry deleting and redownloading the game might not either if the controls are save somewhere else.
EDIT: Was able to fix it by plugging in a controller and using it to set the binds back to default.
Janky, and wouldn't work for someone without a controller, but it worked for me.