fix(log): Handle case when error code is missing (#303)
fix(log): Handle case when error code is missing (#303)

# Before
```
HPM] Error occurred while trying to proxy request <redacted> from <redacted> to <redacted> (undefined) (https://nodejs.org/api/errors.html#errors_common_system_errors)
```

# After
```
[HPM] Error occurred while trying to proxy request <redacted> from <redacted> to <redacted> (Error: Hostname/IP doesn't match certificate's altnames: "Host: <redacted>. is not in the cert's altnames: DNS:<redacted>, DNS:<redacted>") (https://nodejs.org/api/errors.html#errors_common_system_errors)
```
chimurai/http-proxy-middleware,chimurai/http-proxy-middleware,chimurai/http-proxy-middleware