Improve error message

[esterm]

 "message": "Type error: Return value of NilPortugues\\MessageBus\\CommandBus\\Resolver\\SymfonyContainerResolver::instantiate() must be an instance of NilPortugues\\MessageBus\\CommandBus\\Contracts\\CommandHandler, instance of Modules\\Forum\\Domain\\Services\\TopicDeleterCommandHandler returned"

The following error message would be a bit more clear, could you add it please?

"Make sure that the class TopicDeleterCommandHandler extends from CommandHandler"