我遇到了车把问题（车把没有定义）

So after I start my server, go to my local host, and either click the sign up or login button, I get an error popping up in my console saying "Uncaught ReferenceError: Handlebars is not defined" I don't know what exactly the issue is. I tried re- npm installing it because maybe I didn't have it installed. The error that immediately pops up in the console before I actually click the buttons is this:So after I start my server, go to my local host