text: """
  hqca errors.
  """
  
  
  class QuantumRunError(Exception):
      """
      Generic error for quantum runs.
      """
      pass
  
  class HamiltonianError(Exception):
      pass
  
  class DeviceConfigurationError(Exception):
      """
      Raised for incompatibilities in configurations.
      """
      pass
  
  
  class KeywordError(Exception):
      """
      Missing certain keyword.
      """
      pass
  
  
  class TransformError(Exception):
      """
      Error in performing operator transformations.
      """
      pass
  
  
  class OperatorError(Exception):
      """
      Error in handling of operators
      """
      pass
  
  
  class TomographyError(Exception):
      """
      Error in generation of tomography object.
      """
      pass
  
  
  class PositivityError(Exception):
      """
      Error in the RDM
      """
      pass
  
  class AnsatzError(Exception):
      """
  
      """
      pass