Problem after deleting concept

Greetings, I have deleted a concept related to orders and my order panel in clinical does not work anymore I get the following mesage

[converting class org.openmrs.Concept to]

any help?

You could add the test with the different FQN. or try recreating the test which you had deleted.

Thanks @sanjayap let me try to recreate. what is FQN sorry?

Fully specified name (Qualified name)

Ok thank you @sanjayap . Can you also please help me in reports, I have some problems there