If I try to access a prior version when using an Apple app such as TextEdit, by choosing Revert To and then Browse All Versions, the image with the older versions flashes on my screen and then immediately disappears. In its place I get an error message with a small image of a hard disk with three people holding hands. The text says 'There was a problem connecting to the server. URLs with the type “file:” are not supported." All I can do is click OK.
My iMac (2017, 10.14.6) is not networked to any server. This has been true since I got this iMac (running Sierra), and I believe on my prior iMac as well.
I’ve done searches on this. All the discussions I find are pretty old. It has been blamed on iCloud (my documents are stored locally), on Time Machine (I do not use it; it is turned off), or on permissions (which I can no longer fix easily).