1. Setup a new free-style job

2. Select Promote builds when

Promote immediately once the build is complete
Add an action

3.
In job, select
This build is parameterized
Add a String paramter

BUILD:
In promotion status it will fail and show:

FATAL: null
java.lang.NullPointerException
at hudson.plugins.promoted_builds.Promotion.getParameterValues(Promotion.java:142)
at hudson.plugins.promoted_builds.Promotion$RunnerImpl.doRun(Promotion.java:206)
at hudson.model.AbstractBuild$AbstractBuildExecution.run(AbstractBuild.java:565)
at hudson.model.Run.execute(Run.java:1592)
at hudson.model.Run.run(Run.java:1539)
at hudson.plugins.promoted_builds.Promotion.run(Promotion.java:170)
at hudson.model.ResourceController.execute(ResourceController.java:88)
at hudson.model.Executor.run(Executor.java:237)

Verified that it works if I downgrade to 2.13