ADB Process kill error. Android 11

My camera doesn't work on a custom ROM (Android 11), I searched for a fix online, and it says that I have to restart the camera service, they said to run this command on ADB: kill -HUP ps -A | grep camera | awk '{print $2}' but when I hit enter it gave me an error of:

/system/bin/sh: kill: ps: arguments must be jobs or process IDs   
/system/bin/sh: kill: -A: arguments must be jobs or process IDs

--- I ran ps -A | grep camera It outputs

cameraserver    375    1   25432   2584 binder_thread_read a9825cec S android.hardware.camera.provider@2.4-service 
camera          426    1   73104   2432 poll_schedule_timeout aea69eac S mm-qcamera-daemon

Can anyone help me to solve this problem?