I have configured gcloud with correct project, service account and other configurations. Enabled Google API and ran application on GKE clusters.

I am facing the following logs

Caused by: com.google.api.client.googleapis.json.GoogleJsonResponseException: 403 Forbidden
POST https://storage.googleapis.com/upload/storage/v1/b/foo/o?projection=full&uploadType=multipart
{
  "code" : 403,
  "errors" : [ {
    "domain" : "global",
    "message" : "Insufficient Permission",
    "reason" : "insufficientPermissions"
  } ],
  "message" : "Insufficient Permission"
}
    at com.google.api.client.googleapis.json.GoogleJsonResponseException.from(GoogleJsonResponseException.java:150)
    at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:113)
    at com.google.api.client.googleapis.services.json.AbstractGoogleJsonClientRequest.newExceptionOnError(AbstractGoogleJsonClientRequest.java:40)
    at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:555)
    at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.executeUnparsed(AbstractGoogleClientRequest.java:475)
    at com.google.api.client.googleapis.services.AbstractGoogleClientRequest.execute(AbstractGoogleClientRequest.java:592)
    at com.google.cloud.storage.spi.v1.HttpStorageRpc.create(HttpStorageRpc.java:305)
    ... 12 more