Not able to close computer, Photos is blocking from closure, message is "Library Closing"
Not able to close the computer, Photos is blocking from closure, the message is "Library Closing"
MacBook Air, iOS 11.4.1
How many photos do you have in your Photos app? It may be possible that with either a large number or one or more that are corrupted to make it difficult to for the app to shut down properly.
Repair your library when it has problems - Apple Support