Hello,
I think I can help you to fix issue to run combine app(front-end and back-end). Let me know when we can discuss in details.
I am Sr. full stack developer & DevOps with 5+ years experience. I have experience in JavaScript, NodeJS, ExpressJS, AngularJS, MongoDB, MySQL, PostgreSQL, Linux, Nginx, Apache, AWS, Git, etc.
Looking forward working with you.
Thanks