Help me host my node.js app

Hello, I've written a node.js app to handle some API in my company. I need to host it on Google Appengine (standard env), but it's failing with an error. It seems I have something wrong in my app setup that I don't even know about. I am new to node.js dev. Your task is to do the following 1. Setup my production / dev environment changeover system so that i can deploy different database settings online and on my pc. 2. Deploy my app online to my google cloud project. I will give you access as a project manager. The app is simple. It's just an API that connects to a database. It's a great fun and easy job for someone who knows node.js and google appengine deployment. You'll have to show me everything and answer my questions. I am ready to pay up to $60 for this The screenshot of the error is attached. Thanks