I have a slightly annoying issue after upgrading to Postman 8.0.7 and I could not find a related topic.
It shows this prompt a lot of times very briefly when opening the program and then after loading for 10 seconds-ish the program works fine again. So it is not a huge issue, but nothing have changed besides upgrading.
Hi @peter1 Welcome to the community 
Even I faced this issue for few days, I am trying to reproduce and found that sometimes switching workspace is causing this error. Also the issue is sporadic.
I have logged the issue in GH. Please feel free to add your comments or screenshots to it.
We’re aware of this issue and are working on a fix.
This would usually occur if you have tabs open for entities (Requests/Folders/Collections etc) that have moved or have been deleted from the currently active workspace.
You can see the 3 open tabs in the image, without request names.
@dannydainton Thanks for the update Danny 
After that error I saw the message under the requests as well. Well, it’s just User Interface issue and no major impacts.
Since I don’t see any issues reported already, I did in GH 
