That is probably related to your lost media path, as per your other support post.
That particular error message is of no use for any form of analysis. It is the result (not cause) of 99.9% of all errors. What is needed is all of the rest of the message, which should be in your server logs, especially if you have error logging turned on for your server.
Will see if the error number increases as the evening goes on. Again, server logs not available for Sep 01 until after midnight in California. Will email separately to see if they contain anything extra in terms of error logging which I think I turned on. Not to relate to this error but to troubleshoot if I didn’t turn on as expected.