https://arstechnica.com/gadgets/2021/02/googles-older-pixel-cameras-are-failing-at-an-accelerating-rate/

Does the Pixel camera have a hardware problem? Android Police has tracked down numerous reports of broken cameras on the Pixel 2 and Pixel 3, and the Pixel-exclusive Google Camera app has been getting review-bombed with tons of 1-star reviews from users saying their cameras no longer work. Google told the site it doesn't know of any software issues, suggesting that all these people are experiencing a hardware failure.

The problems range from the camera app instantly crashing when it is opened, displaying a black screen, or showing an error message that reads "Something went wrong. Close and open the camera app again." Claims for what exactly is causing the issues are all over the place, but it seems hard to blame a software bug since both the Google camera and third-party apps are affected, and uninstalling updates and factory resets don't fix the problem.