Mobile cam is not working anymore?

When I try Snapchat to start a video call, after a few seconds the message 'connection failed'. Or if I'm called with video and I click on accept, the loading screen remains and after a short time comes the same message. If I want to play a video on a website I see my 'video picture' but the video of the other one does not load, so I only see a still picture. Does anyone know how I can fix this? I have a Huawei Mate 10 lite

I guess it's the internet connection. I would just try to switch the Internet on and off several times when the problem occurs. If that does not work then uninstall the app (s) and install it best again.

Did you do a custom Rome or what did Magisk do? If not, then unfortunately I can't help you, but tap on a software error