Hi @Diksha
what version of Tutor are you running? you can run tutor --version to confirm
Have all the course components been published in Studio? And have you tried to reindex the course in Studio?
It may be worth tailing the logs and then reproducing the error to see if the logs show anything interesting: tutor local logs -f --tail 1
you can use the </> (preformatted text) block to paste the text instead of a screenshot, as this makes it easier to read/search