def add_span(self, langfuse_span_data: LangfuseSpan | None = None):

        data = filter_none_values(langfuse_span_data.model_dump()) if langfuse_span_data else {}

        try:

            body = CreateSpanBody(

                id=data.get("id"),

                trace_id=data.get("trace_id"),

                name=data.get("name"),

                start_time=data.get("start_time"),

                end_time=data.get("end_time"),

                input=data.get("input"),

                output=data.get("output"),

                metadata=data.get("metadata"),

                level=data.get("level"),

                status_message=data.get("status_message"),

                parent_observation_id=data.get("parent_observation_id"),

                version=data.get("version"),

            )

            event = IngestionEvent_SpanCreate(

                body=body,

                id=self._make_event_id(),

                timestamp=self._now_iso(),

            )

            self.langfuse_client.api.ingestion.batch(batch=[event])

            logger.debug("LangFuse Span created successfully")

        except Exception as e:

            raise ValueError(f"LangFuse Failed to create span: {str(e)}")