Login failed (401 Unauthorized) in RHOCP4

Issue

• Error when trying to login to openshift cluster from GUI and from CLI.
• Getting error Login failed (401 Unauthorized) when trying to login from CLI.
• openshift-kube-apiserver cluster operator is degraded in the cluster.
• Pods in openshift-kube-apiserver project are stuck in ContainerCreating state.
• Below events in openshift-kube-apiserver project :

Events:
Type     Reason                  Age    From     Message
----     ------                  ----   ----     -------
Warning  FailedCreatePodSandBox  5m16s  kubelet  Failed to create pod sandbox: rpc error: code = Unknown desc = failed to create pod network sandbox k8s_installer-xx_openshift-kube-apiserver_xxx: error adding pod openshift-kube-apiser
Warning  FailedCreatePodSandBox  49s  kubelet  Failed to create pod sandbox: rpc error: code = Unknown desc = failed to create pod network sandbox k8s_installer-xx_openshift-kube-apiserver_xxx: error adding pod openshift-kube-apiserver_installer-xx to CNI network "multus-cni-network": plugin type="multus" name="multus-cni

• Below error in describe pod controller-manager-xx openshift-controller-manager project :

Events:
  Type     Reason                  Age                  From     Message
  ----     ------                  ----                 ----     -------
  Warning  FailedCreatePodSandBox  61s (x5765 over 8d)  kubelet  (combined from similar events): Failed to create pod sandbox: rpc error: code = Unknown desc = failed to create pod network sandbox k8s_controller-manager-xx_openshift-controller-manager_xx): error adding pod openshift-controller-manager_controller-manager-xx to CNI network "multus-cni-network": plugin type="multus" name="multus-cni-network" failed (add): [openshift-controller-manager/controller-manager-xx:ovn-kubernetes]: error adding container to network "ovn-kubernetes": CNI request failed with status 400: '[openshift-controller-manager/controller-manager-xx] [openshift-controller-manager/controller-manager-xx] failed to get pod annotation: timed out waiting for annotations: context deadline exceeded