AWS - Lambda - Node.js - Simple Contact Form -

I am having an issue with a contact form I am building. The details of the issue are here: [login to view URL] Please upvote the question if you give it a look. I'm thinking this should be as simple as changing a few CORs settings or changing a few lines of code, but I've spent 5 hours trying to find the solution. If you are a web development expert with AWS / Lambda / Node.js experience please help!