even i getting this error but i couldnt figure why im still getting this error and also im using AKS(Azure Kubernetes Service) using 3 replicas-set of mongodb pod

Here is my error MongoServerError[Unauthorized]: not authorized on admin to execute command

and following this documentation for install https://github.com/mongodb/mongodb-kubernetes-operator/blob/master/config/samples/mongodb.com_v1_mongodbcommunity_cr.yaml

plse help me how can i solve