Agent Browser UI extensions not loading

Summary

All the Agent Browser UI extensions in my test site stopped loading and not working

Content

During development -When we use to upload the javascript file to the extension, we use to clear the cache and re-login in agent BUI to verify the changes reflected or not.

In our site we are using 10 different agent BUI extensions and all of a sudden the agent BUI extensions in my test site stopped loading and not working. while checking the sources its not loading the JS files and few other files its blank.

Not sure what could be the issue? appreciate any help and thoughts.