Gradle - Issue with aggregate goal when run from sub-module

[Piyush Mittal]

When ODC was ran with aggregate goal from sub-module in a multi-module gradle project, then it fails with following error:

Execution failed for task ':testGradleSubmodule:dependencyCheckAggregate'.

> Cannot invoke method forEach() on null object

However,  ./gradlew dependencyCheckAnalyze --info works fine. From error it seems that plugin failed because there is no further level 2 sub-modules.