Trackpad click not working

I installed Big Sur a few days ago, today i woke up to see my trackpad click is not working. The other functions of trackpad are working normal like the gestures etc but cant click, left and right click also not working. Tried using an external usb mouse but only the right click works not the left (main) click. Any suggestions or inputs as to why this is happening? Any way to resolve this?
Trackpad click not working
 
 
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