Video Cam light sensor stopped working

I have 2 ring video cams. One is located in the back of my house, the other over my front porch. The one in back works fine, however, the one in front started having a problem about a week ago. I have not changed any of the settings, but it has stopped activing the light at night when motion is detected. I can activate the light manually –so the light works, it has just lost the motion activation. It also picks up and records motion like it should. Any idea what the problem is and how to fix it.