Unable to connect springboot with keycloak

[Ajmalkhan7]

I have keycloak codecentric helm chart deployed and keycloak version is 25.0.0 and its up and running. I want to connect springboot application with keycloak.

But i am getting the following error

Couldn't retrieve remote JWK set: org.springframework.web.client.ResourceAccessException: I/O error on GET request for "https://example.com/auth/realms/RELAM_NAME/protocol/openid-connect/certs": PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

My application.yaml configurations for keycloak are as follows:

keycloak:
jwk-set-uri: https://example.com/auth/realms/REALM_NAME/protocol/openid-connect/certs
auth-server-url: https://example.com

keycloak-tenants:
auth-server-url: https://example.com
realms:
- CLI_ADMIN:
realm: REL_NAME
resource: CLI_ADMIN
principal-attribute:
admin-cli: false
client-secret: M
order: 1
- CLI_MASTER:
realm:
resource:
principal-attribute:
admin-cli: false
client-secret:
order: 2

security:
jwt:
issuers:
- https://example.com/auth/realms/REALM_NAME
- https://example.com/auth/realms/REALM_NAME

and values.yaml for code centric helm charts is as follows

command:

• "/opt/keycloak/bin/kc.sh"
• "start"
• "--spi-events-listener-jboss-logging-success-level=info"
• "--spi-events-listener-jboss-logging-error-level=warn"

extraEnv: |

• name: KEYCLOAK_ADMIN
  value: admin
• name: KEYCLOAK_ADMIN_PASSWORD
  value: admin
• name: JAVA_OPTS_APPEND
  value: >-
  -Djgroups.dns.query={{ include "keycloak.fullname" . }}-headless
  -Dkeycloak.hostname=example.com
  -Dkeycloak.proxy=forward
• name: KC_HOSTNAME_STRICT
  value: "false"
• name: KC_HTTP_RELATIVE_PATH
  value: "/auth"
• name: KC_CACHE_STACK
  value: kubernetes
• name: KC_PROXY
  value: edge
• name: HTTP_ADDRESS_FORWARDING
  value: "true"
• name: KC_HOSTNAME
  value: example.com
• name: KC_HEALTH_ENABLED
  value: "true"
• name: KC_HTTP_ENABLED # SSL termnites at reverser proxy, need this enabled.
  value: "true"
• name: KC_HOSTNAME_STRICT_HTTPS # SSL termnites at reverser proxy, need this disabled.
  value: "true"
• name: KC_SPI_HOSTNAME_DEFAULT_ADMIN
  value: "example.com"
• name: PROXY_ADDRESS_FORWARDING
  value: "true"
• name: KEYCLOAK_PRODUCTION
  value: "true"

Any help on this would be highly appreciated.