Problems reporting emails as spam in Usermin

I have the following error, but really at a loss as to what to do about it: "Reporting this message to Razor and other SpamAssassin spam-blocking databases .. .. failed! See the error message above for the reason why."

There's no error message in the output at all in Usermin, the only thing I can think of that's causing the problem is that I recently updated Virtualmin but not sure how to go about maybe going back to a previous version, even if that's at all possible?