we upgraded Moodle 2.5 to 2.9.
On pagination bar when I click on next page number this is the error I am getting here
I went through many solutions disscussed on Moodle.org and tracker.moodle.org but nothing work for me. here another thing I noticed that when user has only 1 or 10 courses which are visible on first page (as perpage set to 30) still it shows paging bar and when user click on this this take to error page.