How to delete missing temp files ?

I have rather large document I keep as a lab log.
I periodically saveLibreTMP.odt new copy.
Now I am getting these errors every time I open the doc.
Basically missing some “tmp” files.
Annoying so I would like to delete these files.
How?

LibreTMP.odt

I hope you can read the attached file - it looks strange

As far as I can see, LO tries to access these files and as these files no longer exit, the message pops up. Maybe the navigator can give some indication which files are missing.

emphasized textNope, navigator does not see them and I got plenty of entries in it