Start Job Activity Does Not Work With NumberOfRobots As 0 Or Empty In Modern Folder

StartJob Activity not working for modern folder when NumberOfRobot = 0 or empty ?

Issue Description: When keeping the NumberofRobots empty or 0, Start Job Activity does not work for Modern folder and throws the below error,

Error Message Screenshot:

Resolution: This behavior is improved in version 2021.10 . Hence it is required to upgrade to the latest version.