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.

[Italo Qualisoni [e-Core]]

Probably related to this Multi-Level Cascading Select app from Sourcesense

[Kris Han]

Hi @Italo Qualisoni [e-Core]  and @Nic Brough -Adaptavist- ,

Sorry, I think my problem is how should I access  Multi-Level Cascading Select field? Do you have any idea on this? Thanks for your help!

Kris  

[Nic Brough -Adaptavist-]

You'll need to get a valid licence for it and install the key (under admin -> manage apps -> Multi-level-cascading-select). 

Then it will start to work (or give you a different error to work with if your code is wrong).  At the moment, you're calling a plugin that is not licenced, so it is refusing to work.