Error: An action must implement its run method

Rasa Open Source
2

@Resand There is nothing as submit method in Action
run method is associated with Action
submit method is associated when using FormAction

Instead of

class ActionCourseSearchCustom(Action):

change to

class ActionCourseSearchCustom(FormAction):

For more detail refer -> https://blog.rasa.com/building-contextual-assistants-with-rasa-formaction

I would recommend class name to start as FormActionCourseSearch for form action. That won’t confuse between actions. Hope, it Helps!