langflow-ai/langflow · error · HTTPException

Failed to retrieve the number of flows attached to deploymen

Error message

Failed to retrieve the number of flows attached to deployment {deployment.id}.

What it means

Error "Failed to retrieve the number of flows attached to deployment {deployment.id}." thrown in langflow-ai/langflow.

Source

Thrown at src/backend/base/langflow/api/v1/mappers/deployments/helpers.py:812

                f"for deployment {deployment.id}."
            ),
        ) from exc
    except Exception:  # noqa: BLE001
        logger.warning(
            "Binding-aware sync failed for deployment %s; returning unverified attachment count",
            deployment.id,
            exc_info=True,
        )
        await db.rollback()  # rollback outer session to avoid partially synced state
        try:
            return await count_deployment_attachments(db, user_id=user_id, deployment_id=deployment.id)
        except Exception as exc:
            logger.warning(
                "Fallback attachment count query also failed for deployment %s",
                deployment.id,
                exc_info=True,
            )
            raise HTTPException(
                status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
                detail=f"Failed to retrieve the number of flows attached to deployment {deployment.id}.",
            ) from exc


async def get_deployment_synced(
    *,
    deployment_adapter: DeploymentServiceProtocol,
    deployment_mapper: BaseDeploymentMapper,
    deployment: Deployment,
    provider_key: str,
    user_id: UUID,
    db: DbSession,
) -> tuple[Deployment, DeploymentGetResult, int]:
    """Fetch a provider deployment and sync local state."""
    try:
        provider_deployment = await deployment_adapter.get(
            user_id=user_id,

View on GitHub (pinned to 976ec789d2)

Solutions

1. Retry the operation; check provider connectivity and server logs if it persists.

When it happens

Trigger: Occurs when querying the number of flows attached to the deployment fails.

Common situations: See trigger scenarios.

AI-assisted analysis of langflow-ai/langflow@976ec789d2 (2026-08-14). Data as JSON: /api/errors/5a8ab3920c4a6c0d. Report an issue: GitHub.