Before adding some information on attribute table it was working but after sometime it is not working properly. What is the solution?
Does the attribute table have a joined table/excel sheet which is also opened? Try closing all applications and try again. Reboot ArcGIS Pro, if needed.
What is the edit status of the file? Did you save, then stop edits at some point? go to the editor toolbar and 'start' editing that file? Does that work?
Try to include more information as to when it worked and when it stopped working. What did you do during the intervening time period.
When you try to edit the attributes does it throw any errors? If so can you share that?
I had this problem as well - I had forgotten that I compressed the geodatabase, uncompressing it solved the problem. Not sure if that's the case here but worth giving a look.
Retrieving data ...