langflow-ai/langflow · error · HTTPException

Deployment provider {provider_key} does not support binding-

Error message

Deployment provider {provider_key} does not support binding-aware GET sync for deployment {deployment.id}.

What it means

Error "Deployment provider {provider_key} does not support binding-aware GET sync for deployment {deployment.id}." thrown in langflow-ai/langflow.

Source

Thrown at src/backend/base/langflow/api/v1/mappers/deployments/helpers.py:790

        async with db.begin_nested():
            await delete_unbound_attachments(
                db=db,
                user_id=user_id,
                provider_account_id=deployment.deployment_provider_account_id,
                deployment_ids=[deployment.id],
                bindings=bindings,
            )

        return await count_deployment_attachments(db, user_id=user_id, deployment_id=deployment.id)
    except NotImplementedError as exc:
        logger.error(
            "Mapper for provider %s does not support binding-aware GET sync for deployment %s",
            provider_key,
            deployment.id,
            exc_info=True,
        )
        raise HTTPException(
            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
            detail=(
                f"Deployment provider {provider_key} does not support binding-aware GET sync "
                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",

View on GitHub (pinned to 976ec789d2)

Solutions

1. Use a provider that supports binding-aware sync, or perform a full re-deploy instead.

When it happens

Trigger: Occurs when a binding-aware GET sync is requested for a deployment whose provider does not support it.

Common situations: See trigger scenarios.

AI-assisted analysis of langflow-ai/langflow@976ec789d2 (2026-08-14). Data as JSON: /api/errors/b9b83a0268ecd49b. Report an issue: GitHub.