Hi Team,

We face the below error while we enable the throttle concurrent functionality. We do not face the issue without throttle-concurrent plugin functionality. We used the declarative pipeline here.

Syntax used:

  throttleJobProperty:
    categories:
    - categoryName: "categor_name"
      maxConcurrentPerNode: 1
      maxConcurrentTotal: 4

Could you please help us resolve the issue?

Jenkins Error logs: 

Exception evaluating if the queue can run the task 'master' java.lang.NullPointerException

Let us know if you need more details. Thanks in advance!