Thanks for coming back with the screenshot of the error you received, @wamon. 

Since your company file isn't on a server, I'd recommend you contact our Customer Care team. At this point, they are the best person that can help check your data and fix the issue. 

You can also check out some more troubleshooting steps in this article in case you encounter the same issue again in the future: How to fix Error 6000,-83. It contains different scenarios with this kind of error and their fixes. 

I'm always around here if you need support with anything else about QuickBooks. Stay safe.