text: import traceback
  
  
  class UnknownError(Exception):
      """알 수 없는 에러"""
      def __init__(self, err):
          msg = f"Unknown Error:: {traceback.format_exc()}"
          super().__init__(msg)
  
  
  class NoSuchDirectoryError(FileNotFoundError):
      """ When Directory could not be found from source """
  
  
  class PresetValidationError(Exception):
      """ When Preset File fails validation """
  
  
  class DialectValidationError(Exception):
      """ Dialect for create_engine is not valid """
  
  
  class AuthenticationError(Exception):
      """ Auth fail """
  
  class SSHError(Exception):
      """ ssh fail """
  