Hello pankaj (and team),
About 3 weeks ago I posted "Error 404 - Not Found" and it was resolved at that time.
However, I just found out that the error came back (I don't know when it actually started to happen again). Note that it does it only for the modules. No problem with creating and editing lessons.
At that time, the solution was what you wrote:
"I've made a patch for your site. File components\com_guru\views\guruauthor\tmpl\authortreecourse.php
Line 490, remove this string JUri::root() ."
I did make the change then, and it solved the issue. But now it's back! What else can I check or do now?
Tks,
Serge