Faced issue created problem when I created linked issue

Kris Han

Hi all, 
Recently, I faced one problem when I want to create linked issue and it will pop up error message as screenshot. The field which was mentioned in error message is a Multi-Level Cascading Select field and I need to copy it to linked issue. Please help me to fix it. Thank you very much!
     

Nic Brough -Adaptavist-

You have installed an app which provides a field.  The app does not have a valid licence and the trial period has expired, but you are still trying to use it.

Go to Admin -> Custom Fields and look for all fields of type "multi level cascading select".  Delete the fields.  Then go to Admin -> Manage apps, and remove the app.

Or, if you want to carry on using it, go to Admin -> Manage apps, and follow the instructions for getting it licenced.