a typeError in build_env() function

I inherited from gym.Env and created a new class, passing in the additional parameter env_config in the __init__ method of this new class. But when I use train_agent(), the built_env() will report an error, check elegantRL source code, this is because my gym.make is gym.envs.registration. So by default no parameters are passed when creating an environment. Is there any solution?