Authentication cluster-operator in Unkown state

Issue

Authentication clusteroperator is in 'Unknown State' causing Console clusteroperator to fail.

user@example.com]$ oc get clusteroperators
NAME                                 VERSION   AVAILABLE   PROGRESSING   DEGRADED   SINCE
authentication                                 Unknown     Unknown       True       68m
cloud-credential                     4.1.11    True        False         False      72m
cluster-autoscaler                   4.1.11    True        False         False      72m
console                              4.1.11    False       True          False      32m

• Logs from openshift-authentication-operator pod

E0918 00:08:08.943711       1 controller.go:129] {AuthenticationOperator2 AuthenticationOperator2} failed with: error checking current version: unable to check route health: failed to GET route: EOF
E0918 00:08:11.531093       1 controller.go:129] {AuthenticationOperator2 AuthenticationOperator2} failed with: error checking current version: unable to check route health: failed to GET route: EOF
E0917 23:32:06.504482       1 controller.go:129] {AuthenticationOperator2 AuthenticationOperator2} failed with: failed handling the route: route is not available at canonical host oauth-openshift.apps.example.com: []
E0917 23:32:06.705016       1 controller.go:129] {AuthenticationOperator2 AuthenticationOperator2} failed with: failed handling the route: route is not available at canonical host oauth-openshift.apps.example.com: []
I0917 23:33:05.881081       1 status_controller.go:164] clusteroperator/authentication diff {"status":{"conditions":[{"lastTransitionTime":"2019-09-17T23:33:05Z","message":"RouteStatusDegraded: route is not available at canonical host oauth-openshift.apps.example.com