How can I read a EPW file?

Welcome! Sorry about the trouble you've been having.

Looking at eplusr's repo, it appears to be well supported.

A good way to seek help with this is to provide a reproducible example (follow the link for instructions and explanations), with a small data file you can share that demonstrate the errors or issues you've encountered trying to load .epw files.
To include your data, you'll want to follow one of the methods discussed here.