It is an error in downloading content, whether that content has already started downloading or have had an error in the same
1-Go to "Notifications" / "Downloads"; checks if the content is in the list and delete it from the menu options and go back down the new content.
2 If you can not download the content, make a backup USB or PS online storage, then go to the "safe mode" and rebuild the database "Database 4.Rebulid". When finished, reload the backup you made and retry the download denuevo
3 If the error persists, you have to go to "Settings" and restart from there the PS4 "
If doing all the steps do not get the download, call the SAT problem can be the hard disk.