the real reason for this error is due to the backup eating the server space. I need to expand the VM for the DB build but to do that i got to shut the entire thing off, which i've not. Having duplicated the current VB database for then Xenforo conversion ate up a lot of additional space and so when the backup triggers, it eats the remainder and causes that. Upon removing of the old backups and relaunching SQL I have to then repair the DB as it crashes a few tables.
So, thats whats happening here.