@Mahekaw Try clearing both the Data and Cache of the Camera App. If to no avail you could try seeing if the Camera works in Safe Mode , if successful may be a particular app that is the issue. However if not you may wish to clear the cache partition. In Android 11 need to connect Device to computer or use USB-C Headphones.
Some more advice in this thread: https://www.slashdigit.com/fix-galaxy-note-20-camera-not-working-issue/
I do not work for Samsung or make Samsung Products but provide independent advice and valuable contributions.
My Device- S21 Ultra 5G ( SM-998B/DS ) CSC= BTU , 12GB/256GB
One Ui 5.0,Android 13 .
yes this device continuously showing this error I don't know the reason about it but still I have one way to guide you for further details see .
Hey @Mahekaw ,
do you still have this issue? If so, in order to determine what the issue is with your phone, please perform a Camera Interactive Check on your phone. To do this launch the Samsung Members app> Get help> Interactive checks> Camera and follow the steps listed on the screen. If the camera failed during the test or an exclamation mark is displayed on the screen the best thing to do is to take your phone to one of our Samsung Support Centres. You can locate your nearest Support Centre by heading onto the Members app > Support > Service location.