Cant reset admin password

Cant reset admin password

Hellow, i am forgot admin password in NetFlow Analyzer 12
When i try to recovery password using this instruction:

i get error:

Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 0
at com.manageengine.opmanager.server.util.ResetPassword.main(
-----------------!!BEST PRACTICE!!---------------------------------------------
Use Forgot Password option available in login page to reset passwords of local authenticated users.
Mail Server Settings and Email-Id in User Profile are required for the Forgot Password feature to notify the new password via email.

maybe anyone faced with this situation?

      New to ADSelfService Plus?