Getting error related to wildfly for deploying keycloak

after spinning up the domain cluster keycloak with external infinispan server about every 4-5 days later i need to restart my keycloak cluster as this error comes up

ERROR [] (Host Controller Service Threads - 11) WFLYCTL0013: Operation (“register-server”) failed - address: ([]): java.lang.IllegalArgumentException: WFLYHC0077: There is already a registered server named ‘keycloak_1_172.xx.xx.xx’

any idea ?