Log more information on SigningKeyNotFoundException in the ledger

[realvictorprm]

Coming from this forum post I would like to have extended logs on occurence of the SigningKeyNotFoundException.
Right now the first log statement is:

00:03:29.862 [ForkJoinPool-4-worker-1] WARN  c.d.ledger.api.auth.AuthServiceJWT$ - Authorization error: Could not verify JWT token: com.auth0.jwk.SigningKeyNotFoundException: Cannot obtain jwks from url http://someurl.com/jwt_auth0.html

The statement Cannot obtain jwks from url is ambigious to me, in my understanding it could either mean:

1. The JWKS url is not working for the ledger, e.g. not reachable, wrong response format etc.
2. The kid from the token cannot be found in the JWKS

It would be great if we could log more specifically which of these two cases occured, this would help with fixing issues regarding the authorization setup.

[mziolekda]

This error comes from 3rd party auth0 code. We have no influence over the format or the amount of data provided by this library