The property is either invalid or defined


We have been encountering “Cannot open Item issue” while trying to open xaml file.


Also output gives alert of “The property (SwapHataEkranGoruntusu) is either invalid or not defined. Row: 0, Column: 0”

Also after opening xaml file with Notepad ++, I see the rows below:

Can you share any idea to resolve this issue?

Thanks in advance.

Kindly uninstall and reinstall the application and try once
Cheers @onturk89