class_docstr: Some requested entity (e.g., file or directory) was not found.
  
  The text of this error is assumed not to contain sensitive data,
  and so may appear in (e.g.) the response body of a failed HTTP
  request.
  
  Corresponds to HTTP 404 Not Found or Google error code `NOT_FOUND`.
code: def __init__(self, details=None):
      msg = _format_message("Not found", details)
      super().__init__(msg)
  
file_path: tensorboard/tensorboard/errors.py
label_desc: Use image node_id 1 to create a new NotFoundError object from inherited base classes: PublicError with example: obj = NotFoundError(details)