The Document “untitled 12” could not be autosaved. A file with the name “untitled 12” already exists.

I have a MacBook Pro, 2018, Ventura 13.6.1. When I cut and paste a Text document and go to File to save it, I some times get the message “untitled 12” could not be autosaved. A file with the name “untitled 12” already exists". I need to find out how to clear this message when it happens. It doesn't clear on its own. It will happen with different number's besides "12".