https://iboysoft.com/howto/how-to-fix-com-apple-extensionKit-errordomain-error-15.html
[10 Ways] Fix com.apple.extensionKit.errorDomain error 15
Ever been stuck in the error message that reads: Setting Error The operation couldn't be completed (com.apple.extensionKit.errorDomain error 15)? Calm down,...
waysfixappleerror