I take it you've tried all these?
An error has occured with an application or system software.
Step 1: Close the application, install the latest system software and game update, and restart the system.
Step 2: If a PS Camera is connected to the system, remove it and reboot the system, then go to [Settings] > [User] > [Login Settings] and turn "Enable Face Recognition" OFF.
Step 3: If the error occurs again, back up your saved data, and then go to [Settings] > [Initialization] and choose [Initialize PS4].