When using the Directive Generator, building a when / allOf directive with no conditions attached produces a NPE. This was another accidental find.
Steps to recreate
1. Go to the Declarative Directive Generator via http://184.108.40.206:8080/job/your-pipeline-job/directive-generator/
2. Set it up as follows:
- Sample Directive: when
- whenCondition: allOf
- Execute the stage if all nested conditions are true: no selections made
3. And press the Generate Declarative Directive button, you'll get a NPE in your sample: