Unsupported Photo Library, Update Photo

[generdude]

I tried to open Photos and got this message:

The library "Photos Library" is from a newer version of Photos.
Please upgrade Photos to open this library.

When I do this, there are no photos. All gone. I looked in Pictures and see Photo Library and Photo Library 2. I look in Get Info for both. The original Photo Library shows 35GB. The Photo Library 2 shows 2.5MB. But when I click on Photo Library (original, 35GB) I get the above message.

I have done Show Package Contents but I know if I copy from there and Import I will get the photos back but they will be unnamed and no albums,
Can I Restore the intact Photo Library from Time Machine?

I did reinstall Mojave beforehand for another reason. Could this be the problem?

What should I do now?

 

[generdude]

I realized that when I reinstalled the OS it only installed the base version; it never told me to update it. So I just did this and it solved the problem.

 

[pjharii]

Hi, I am facing the same issue. Can you help with solution. Can i sync the photo library on my iphone photos app to mac and sort this out?

 

[generdude]

Update your computer. Click the Apple upper left menu, click About This Mac, click Software Update...

 

[pjharii]

Update your computer. Click the Apple upper left menu, click About This Mac, click Software Update...

I got it fixed. Tried holding combined keys(control+command or option +command) and double clicked the photos app icon. It repaired 😁