eventhubskafka-flink-eventhubskafka fails with missing Zookeeper incubator chart

[algattik]

deploying Helm charts
. chart: zookeeper
Error: looks like "http://storage.googleapis.com/kubernetes-charts-incubator" is not a valid chart repository or cannot be reached: failed to fetch http://storage.googleapis.com/kubernetes-charts-incubator/index.yaml : 403 Forbidden