Permission to use cam/mic

I used to join in Jitisi meetings with my start my cam and mic. But Now cannot anymore.
the message is “eror obtaining cam permission”.

When I go to the side setting bar, it says “I’m not granted permission to use camera / Microphone”

I cannot find a way to make my cam or mic work when I join a meeting. What should I do?

Thank you for your help

Check if camera and mic are not used by another application or by jitsi itself opened in other tab or browser.
If not used you can grant permission