Facing issue when running oc commands in Openshift

Issue

• When running oc commands(oc get pod,oc get node, oc get project) below error is seen :

Error from server: User "system:anonymous" cannot list pods in project "x"

• Why I am getting error when runing oc commands.
• Not able to execute any oc commands. It gives below error :

Error from server: User "system:anonymous" cannot list all nodes in the cluster