No click sound/sense with force touch trackpad
Hi, I am using 13'' Macbook pro early 2015 with new force touch trackpad. Since last week, I am not able to sense the click. Although everything is working fine but that click sense/sound is missing. Sometimes I face issues with trackpad (trackpad stops working) while using Safari. What could be the problem? Shall I update macOS or reinstall macOS?
MacBook Pro with Retina display, OS X El Capitan (10.11.6)