Even i faced the problem, this was a strange error. After a while, i noticed my project folder name had special characters. So when application start, node package is build, so it couldn’t able to locate properly. So it throws an error saying ‘(node:21264) UnhandledPromiseRejectionWarning: Error: ENOENT: no such file or directory’.
Remove the special characters from project folder name and give a try. It would work.
I don't think this will solve your problem, but it is one thing I would try first: switch the port back to 8080.