Behat: context class not found and can not be used.

If you are using Behat for testing your PHP application and you encounter the following error after trying to run your tests:

In UninitializedContextEnvironment.php line 44:
                                                                                                         
  Tests\\Feature\\Behat\\Context\\Account\\MyOldContext\\ context class not found and can not be used.

Do not forget to remove your obsolete Behat Context file (MyOldContext in this case) from your behat.yml configuration file:

default:
  suites:
    default:
      paths:
        - '%paths.base%/tests/Feature/Behat/features'
      contexts:
        - Tests\\Feature\\Behat\\Context\\ApplicationContext
        # Remove the old context file
        - Tests\\Feature\\Behat\\Context\\MyOldContext
        - Tests\\Feature\\Behat\\Context\\EmailContext
        - Behat\\MinkExtension\\Context\\MinkContext
        - behatch:context:browser
        - behatch:context:debug
        - behatch:context:system
        - behatch:context:json
        - behatch:context:rest