Edit: After half day, my wife’s Mac started having the same problem. I have then applied the solution that I found in the Apple
Remote IOS Diagnostics Service Released Within Coming Days –
This service which was leaked by 9to5Mac at the beginning of September and now we are 99% sure that we can see this service being rolled out with in the next couple of days. Apple retail stores have already been using a very similar system to this now and have been for a few months. Apple describe the tools as
iOS Diagnostics sends an email to the iOS device or provides a manual URL that prompts the user to allow a diagnostic report to be transmitted to Apple. iOS Diagnostics will display that report within GSX in near real-time. It’s that simple.
Apple will be able to get access to usage patterns, battery functions, temperature warnings, memory usage, application issues, and more.