Players might face trouble using the PlayStation Network as Sony is performing its routine Maintenance. This maintenance is scheduled from 10 pm to 11 pm Pacific time, some features of the PlayStation Network might not be accessible.
Players will have access to their games as normal and most of the applications will also be responding if you signed in to the PSN account recently.
Sony released an official statement to inform players about the maintenance schedule.
Our network is currently undergoing routine maintenance for approximately 1 hour. Anyone who already has an account can still sign-in to their PlayStation Network profile, play games, and use most applications while this maintenance is carried out. You will not be able to access Account Management, PlayStation Video, PlayStation Store, Gaming And Social, and PlayStation Music during this maintenance. We apologize for any inconvenience.
We recommend activating your PS4 as your primary console before maintenance begins so you can continue to play most games and use 3rd party services during maintenance. To activate your console, sign in to your PlayStation Network profile and select [Settings] > [PlayStation Network/Account Management] > [Activate as Your Primary PS4] > [Activate].
You only need to do this once. We strive to ensure that PlayStation Network services are available at all times, but occasionally we must take PlayStation™Network offline to perform essential maintenance and implement feature enhancements. We are working hard to reduce the duration of each maintenance.
You will not be able to access the online feature during this timing so do not think your console is broken. Sony has assured that they will reduce the maintenance timing in the future.