The transition failed because of an error in validator "issue-is-assigned-validator". This is most likely a bug in the app that provided this validator

i m trying to replicate the same validator given in official documentaion of forge

once I deploy n install, based on transition it gives below pop up

Transition failed

The transition failed because of an error in validator “issue-is-assigned-validator”. This is most likely a bug in the app that provided this validator.