While creating submissions through the browser, submission failed

Hello @Nayana_Balan

Whenever you will get time please Introduce yourself Here

From what you describe I am assuming that you have Gone throuhg the Submissions Tab -> New, and started entering there. I think that somehow you are not logged in and that is generating this error. Either you have consciously logged out, or by clicking New you opened a new window that due to your configuraiton is not logged in. Try clicking Authenticate here as suggested. I cna only get this error by Choosing New and then logging out, so I suspect something similar has happened here