Hello, I have a 2012 Camaro A6. My factory rearview mirror reverse camera seems to have failed.

When I put the gear into reverse gear, there is no image in the rearview mirror. A camera deletion symbol will appear in the upper left corner of the rearview mirror and flash for a few seconds, but my reversing radar is still working normally
How can I fix it?
Sorry, my grammar is not very good, please forgive me!