Access to unnamed file

It occurs to me that the error's reference to an unnamed file may have to do with file access in the user account that Windows 11 chose on its own. I had backed up my work files to the cloud using Microsoft OneDrive, and somehow from the moment I turned on the computer, it set up a user account with OneDrive as its Documents folder and subfolder. I'm not sure I want that and may need to investigate how to change this. It's not obvious, but I could see if it makes a file unavailable to Dreamweaver. As it is, I can see all my documents in Word or html, but pictures are not always visible (except with a generic icon) unless I sign in to OneDrive each time! I searched for options to have it start automatically, but they didn't seem to apply to me. Say, one page told me to open OneDrive and change its settings, but my version doesn't even have that settings page! My old computer used OneDrive only for backup, at the cost of dupe folders with tons of files.

But of course I don't know if that's even the issue or how to proceed.