Is is your downloaded apps and or stock ones too ? Some apps can take time to be updated by the developer. You should be able to send a bugreport to them.via the app. See if there are any pending updates in the PlayStore. If not then clear the system file cach which is typically achieved by turning off the phone and then from a set series of button pressess that takes you into the devices system file system. If no joy back up and factory reset.
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