can't run the spark-pi example from the conference. Getting container mounting errors

[dukkune1]

kabir-IAM:~/environment/sparkkubernetesaws $ kubectl get events -n spark
LAST SEEN TYPE REASON OBJECT MESSAGE
8m20s Warning FailedMount pod/spark-sparkoperator-748458c899-dlnbc MountVolume.SetUp failed for volume "webhook-certs" : secret "spark-webhook-certs" not found
2m27s Warning FailedMount pod/spark-sparkoperator-748458c899-dlnbc Unable to attach or mount volumes: unmounted volumes=[webhook-certs], unattached volumes=[webhook-certs spark-sparkoperator-token-gq924]: timed out waiting for the condition
22m Warning FailedMount pod/spark-sparkoperator-748458c899-dlnbc Unable to attach or mount volumes: unmounted volumes=[webhook-certs], unattached volumes=[spark-sparkoperator-token-gq924 webhook-certs]: timed out waiting for the condition