old_contents: import pytest
  
  from rasa_nlu.trainers.mitie_trainer import MITIETrainer
  from train import load_configuration
  
  class TestMitieTrainer:
      def test_failure_on_invalid_lang(self):
          config = load_configuration("config_example.json")
          with pytest.raises(NotImplementedError):
              MITIETrainer(config['backends']['mitie'], 'umpalumpa')
  
new_contents: import pytest
  
  from rasa_nlu.trainers.mitie_trainer import MITIETrainer
  from rasa_nlu.train import load_configuration
  
  class TestMitieTrainer:
      def test_failure_on_invalid_lang(self):
          config = load_configuration("config_example.json")
          with pytest.raises(NotImplementedError):
              MITIETrainer(config['backends']['mitie'], 'umpalumpa')
  
subject: fix import in test