Handlebars site unable to locate files with all references confirmed correct

Question

I am a new developer. I have been working with Handlebars and have come across a problem that AI can't seem to solve. After creating and testing several forms successfully, eventually I create a form and the routes stop working for that form. Then I try one of the earlier forms, and that's broken too. All references and file locations are confirmed correct, but the app can't find the form views. I've started a new app and rebuilt three times only to eventually encounter the same problem with forms all over again. I've theorized a few possible factors:

• Deleting and renaming too many files?
• CSRF token issues? Deprecation?
• View caching in the browser? Anyone have any ideas about this?

Tried rebuilding. Tried renaming files and folders, did not work. Ai can't help. All routes are correct and yet I get a 404 error on that form. I'm wondering if this is a known Handlebars or CSRF problem?