Hey my tab key is not working in atom for doing auto-complete could anyone give advice on troubleshooting this?

Hey my tab key is not working in atom for doing auto-complete could anyone give advice on troubleshooting this? Not sure if issue is coming from atom or on my local osx machine. Not working with vue-autocomplete or emmet. When I type "!" then tab on and .html file it is just deleting the "!" Going to check my osx set up...