- from api.errors import RagFlowError
 - 
 - __all__ = ['ServicesError', 'ServiceNotSupported', 'ZooKeeperNotConfigured',
 -            'MissingZooKeeperUsernameOrPassword', 'ZooKeeperBackendError']
 - 
 - 
 - class ServicesError(RagFlowError):
 -     message = 'Unknown services error'
 - 
 - 
 - class ServiceNotSupported(ServicesError):
 -     message = 'The service {service_name} is not supported'
 - 
 
 
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