Rules like this bellow generated NPE when business-central is parsing it:

rule "ToyWithoutName "

dialect "java"
when
$father: Father()
$kid: Kid() from $father.kids
$toy: Toy(name == null) from $kid.toys

then
System.out.println("blabla");
end

Version-Release number of selected component (if applicable):
6.0.3

How reproducible:

Steps to Reproduce:
1. add as dependency the attached jar in a project
2. push the attach role to the git repository where the project is
3. click on Project Authoring - business-central will try to parse the rule for verification and will generated the exception (actually hidden by the GenericPortableException )

Actual results:
GenericPortableException

Expected results:
No exception, the rule should be opened