class_docstr: Attributes:
      provider_pid -- input expression in which the error occurred
      message -- explanation of the error
code: def __init__(self, provider_pid, external_id=None, external_uri=None):
      self.provider_pid = provider_pid
      self.external_id = external_id
      self.external_uri = external_uri
  
file_path: TimeSide/timeside/core/exceptions.py
label_desc: Use image node_id 1 to create a new ProviderError object from inherited base classes: Error with example: obj = ProviderError(provider_pid, external_id, external_uri)