so I just finished building the beta version of my e-commerce application and decided to deploy to heroku from my github repository. The first issue I ran into was not npm run build (which I did then pushed it to github) then redeployed. Next issue was my build failed because I didn't specify the version of node. (SO i want into the package.json and typed in...)

"engines": { "node": "16.14.2" }, Again, redeployed I got through the build and I thought all was well. BUT I get an application error (fun) and so I go into heroku logs to see what I did wrong. Problem is I actually don't know what i did wrong. This is what the log says