class_docstr: Raised when a constant is not available or it get overwritten.
code: def __init__(self, msg):
      super().__init__(msg + _constant_error)
  
file_path: hummingbird/hummingbird/ml/exceptions.py
label_desc: Use image node_id 1 to create a new ConstantError object from inherited base classes: TypeError with example: obj = ConstantError(msg)