As it tells about a 500 Internal Server Error, it should be able to reach foreman and you should see some error message in /var/log/foreman/production.log.
Enable debug logging, restart, try again. Paste the whole transaction from the beginning to end (use our formatting buttons please). This log looks like pretty old Foreman version, which one is it?
thanks for replying, Yeah you are right it’s very old version of foreman. but luckily this issue has been resolved 30 min back once REPO server had an issue earlier, I am totally confused how that related with REPO server?