Jwks async fetching failed.

*Description*:
I encountered an issue while using the JWKS URI from the security policy to verify the public key of a user's token. The JWKS information provided by the issuer has the "n" field of the public key separated by "/", which is inconsistent with the "-" used in the example. The proxy error message is "Jwks async fetching url=xxxxx/keys/: failed." Is there any way to resolve this?

*Repro steps*:

>**Note**: If there are privacy concerns, sanitize the data prior to
sharing.

*Environment*:
gaetway 1.1.2

*Logs*:
Jwks async fetching url=xxxxx/keys/: failed.