Hi esmi ,
Thanks for the support.
To locate from which file , it was being called.
In windows search , I searched for all php files inside each plugin folder.
Opened it up in notepad ++ , searched for script name , as appearing in wordpress head in all “open documents”. and i got the bug in ubermenu plugin was nulled version and had few lines of coded added up in between the main code.
Hope it helps.
Thanks