The dcaegen2-services-common deployment template checks the chart's values.yaml for a log directory.  It looks for "log.path".  A chart that does not have the "log" property in it will not pass helm lint.

The problem is with this line in oom/kubernetes/dcaegen2-services/common/dcaegen2-services-common/templates/_deployment.tpl:

- $logDir := default "" .Values.log.path -

The default function doesn't nest: if .Values.log doesn't exist, it will complain about a nil pointer.

DCAEGEN2-3087 reports this problem in the context of charts generated by the DCAEMOD Helm generator.  (There is an additional problem with the Helm generator, in that it is using the wrong property for the log directory path in the values.yaml files that it generates.)