Error V-79-57344-34036

Hello, I was wondering if someone could help me get to the bottom of the error (see attached) when                        trying to run a full backup on one of our servers. The last job status was Recovered? Other servers                                full backup jobs have completed successfully. When I did a Test Run on the problem server, that                              was successful. I have looked at the suggested articles and did not find the answer. Thank you.