Wordpress Appearance > Customize having changeset_post_save_failure whenever I try to save the changes

So my wordpress site that I am working on had some failure to load fonts. The errors showing up on dev tools is Failed to load resource: the server responded with a status of 404 () . I went to appearance > customize and found that the code was pathing the font packages I uploaded into the fonts folder incorrectly, so I tried commenting out the css and publish but it won't let me save the changes and says "changeset_post_save_failure". What can I do to fix this?