CORS Policy Annoying Errors redirects me to InfinityFree’s 403 page. It seems that your code is also unable to access it, which is why it gives a warning.

This is likely a code issue, and since your JS is obfuscated, we cannot see it so we cannot try to help you. You’ll have to find out what’s going wrong there.
If the folder is meant to be publicly accessible then this could also be the issue, make sure that the permissions are set up correctly and that access is not denied.