Node JS and sequelize expert needed

I have created a node JS API which is running perfectly on localhost but I am struggling to make it work on my VPS. I have been back and forth with support who say it needs to use a unix socket in order for the Apache configuration to proxy through the NodeJS app - we can't use a TCP socket for this?

The server.js has been updated to use the process.argv[3] value for socket and this seems to be working fine. However when running on this or over the TCP port, periodically I get a CORS issue returned which in my logs is showing as:

AH01114: HTTP: failed to make connection to backend: httpd-UDS

We have a connection to a MySQL database using Sequelize and I'm not sure if this is the issue, as this I believe is over TCP? Can this be done with unix socket too?

Basically, I'm looking for someone who can come on board and help me get this up and running. I also have a second app on Next.JS which will need sorting once we have the API reliably running!

Please get in touch this if this something you can help with - ideally ASAP (ie. complete Friday 16th!)