Selfsigned Cert SSL_ERROR_NO_CYPHER_OVERLAP

Hi There,

When I try to connect to my container like https://kc:8443 in Firefox I get the message:
Error code: SSL_ERROR_NO_CYPHER_OVERLAP
Chrome similarly returns:
ERR_SSL_VERSION_OR_CIPHER_MISMATCH

I am providing a selfsigned cert.pem and key.pem as:
-v /home//keycerts/kc.com.cert.pem:/etc/x509/https/tls.crt
-v /home//keycerts/kc.com.key.pem:/etc/x509/https/tls.key

These files are owned and are readable as root:root. I have tried them owned by jboss user and readable by all users.

The same CA is used to secure a neighbouring hashicorp Vault container and I have verified the certificate
openssl verify intermediate/certs/ca-chain.cert.pem intermediate/certs/kc.com.cert.pem

All the best,

Stephen.

The file https-keystore.jks is missing under the path: /opt/jboss/keycloak/standalone/configuration/keystores/

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