Same issue here. Galaxy S7 Edge on Andorid 8.00. Last system update on 4/2/2019 with System Update 29 on Verizon. Issue started 3 or 4 days ago intermittently. Now this issue is permanent. Camera app presents Warning message an closes app. Any other app trying to use camera cannot do anything. Google Messages crashes when trying to add media because it uses the camera.
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