Thanks alot for your response. It is true with the point that back up was waiting for a plugin to respond. So to an extent your solution worked out.
My course backup is from a moodle in which canvas and lti were integrated. This very system was developed in moodle 3.5 and now am trying to migrate it to stand alone moodle 3.10 . Now in this situation, My query is
what would be the better way to restore a course from integrated moodle 3.5 ( with canvas and lti ) and courses were developed in canvas to stand alone moodle 3.10
Will appreciate all ideas. Thank you.