old_contents: class IrmaDependencyError(Exception):
      """Error caused by a missing dependency."""
      pass
  
  
  class IrmaMachineManagerError(Exception):
      """Error on a machine manager."""
      pass
  
  
  class IrmaMachineError(Exception):
      """Error on a machine."""
      pass
  
  
  class IrmaAdminError(Exception):
      """Error in admin part."""
      pass
  
  
  class IrmaDatabaseError(Exception):
      """Error on a database manager."""
      pass
  
  
  class IrmaConfigurationError(Exception):
      """Error wrong configuration."""
      pass
  
  
  class IrmaFtpError(Exception):
      """Error on ftp manager."""
      pass
  
  
  class IrmaTaskError(Exception):
      """Error while processing celery tasks."""
      pass
  
  
  class IrmaLockError(Exception):
      """Error for the locks on db content (already taken)"""
      pass
  
  
  class IrmaLockModeError(Exception):
      """Error for the mode of the locks (doesn't exist)"""
      pass
  
  
  class IrmaValueError(Exception):
      """Error for the parameters passed to the functions"""
      pass
  
new_contents: class IrmaDependencyError(Exception):
      """Error caused by a missing dependency."""
      pass
  
  
  class IrmaMachineManagerError(Exception):
      """Error on a machine manager."""
      pass
  
  
  class IrmaMachineError(Exception):
      """Error on a machine."""
      pass
  
  
  class IrmaAdminError(Exception):
      """Error in admin part."""
      pass
  
  
  class IrmaDatabaseError(Exception):
      """Error on a database manager."""
      pass
  
  
  class IrmaDatabaseResultNotFound(IrmaDatabaseError):
      """A database result was required but none was found."""
      pass
  
  
  class IrmaConfigurationError(Exception):
      """Error wrong configuration."""
      pass
  
  
  class IrmaFtpError(Exception):
      """Error on ftp manager."""
      pass
  
  
  class IrmaTaskError(Exception):
      """Error while processing celery tasks."""
      pass
  
  
  class IrmaLockError(Exception):
      """Error for the locks on db content (already taken)"""
      pass
  
  
  class IrmaLockModeError(Exception):
      """Error for the mode of the locks (doesn't exist)"""
      pass
  
  
  class IrmaValueError(Exception):
      """Error for the parameters passed to the functions"""
      pass
  
subject: add result not found exception