You may have added it twice under Settings>Storage. If you see two of them on that screen, just disable one of them (three dots on the right of that location).
You may want to back things up, then reboot Roon. The duplicates should disappear.
Another way to do it is to go to Settings>Library>Library Maintenance>Clean up files with a disabled storage location.
If everything looks good, you can delete that storage location you’ve disabled using the Edit choice from Settings>Storage>\\X45 musicDB
I moved your post to a new thread because it is a different issue than the previous user was experiencing.
@grossmsj’s advice (thanks!) appears to be correct in this situation. I would give these steps a try and report back if they fix the issue you are seeing.