Thanks for the help Ritesh. Actually there was a syntax error there in the JS file and when I tried to rebuild clients lins, it was showing error. Now I fixed the error and everything is working fine. I never imagined that it will show 403 if there is an error in JS file. Thanks a lot for your help.

I am trying to modify a javascript file in the clientlibs folder in the publisher instance for debugging purpose. After I add a console log and saved the file. it is showing 403 error in the page. The other JS files included to the page are loading without any issue and only the modified file is sho...