IN Deepstream-6.1.1 While re-connect the camera I am getting this error

There is no update from you for a period, assuming this is not an issue anymore. Hence we are closing this topic. If need further support, please open a new one. Thanks

Can you update the DeepStream to lastest version ? Probably the issue is fixed on new version.
By the way, How do you used the camera ? gst-launch-1.0 or deepstream-app or other sample app ?

There is a FAQ for v4l2 camera, you can refer it.