The problem occurs when trying to trigger a resubmit of multiple documents, for example with the "Resubmit all with status: Error"-button, and instead of going ahead with it you click "Cancel" on the prompt you get. That will then send you to an error page containing the explanation "A required parameter (sesskey) was missing" together with a link towards: https://docs.moodle.org/39/en/error/moodle/missingparam
The problem occurs when trying to trigger a resubmit of multiple documents, for example with the "Resubmit all with status: Error"-button, and instead of going ahead with it you click "Cancel" on the prompt you get. That will then send you to an error page containing the explanation "A required parameter (sesskey) was missing" together with a link towards: https://docs.moodle.org/39/en/error/moodle/missingparam