class_docstr: Raised when failing to query data due to immature experiment.
  
  Useful to distinguish data failure reasons in automated analyses.
code: def __init__(
      self,
      message: str,
      hint: str = "",
      exposures_unavailable: bool = False,
  ) -> None:
      super().__init__(message=message, hint=hint)
      self.exposures_unavailable = exposures_unavailable
  
label_desc: Use image node_id 1 to create a new ExperimentNotReadyError object from inherited base classes: AxError with example: obj = ExperimentNotReadyError(message, hint, exposures_unavailable)