langflow-ai/langflow · error · HTTPException

{exc}

Error message

{exc}

What it means

Error "{exc}" thrown in langflow-ai/langflow.

Source

Thrown at src/backend/base/langflow/api/v1/mappers/deployments/helpers.py:448

def resolve_deployment_adapter(
    provider_key: str,
) -> DeploymentServiceProtocol:
    try:
        adapter_key = require_non_empty(
            provider_key,
            "Deployment provider account has no provider_key configured.",
        )
    except ValueError as exc:
        raise HTTPException(
            status_code=status.HTTP_400_BAD_REQUEST,
            detail=str(exc),
        ) from exc

    try:
        deployment_adapter = get_deployment_adapter(adapter_key)
    except Exception as exc:
        logger.exception("Failed to resolve deployment adapter for key '%s': %s", adapter_key, exc)
        raise HTTPException(status_code=status.HTTP_500_INTERNAL_SERVER_ERROR, detail=str(exc)) from exc
    if deployment_adapter is None:
        raise HTTPException(
            status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
            detail=f"No deployment adapter registered for provider_key '{adapter_key}'.",
        )
    return deployment_adapter


async def get_deployment_row_or_404(
    *,
    deployment_id: UUID,
    user_id: UUID,
    db: DbSession,
) -> Deployment:
    # ``get_deployment_db`` is share-aware when an authorization plugin is
    # registered and ``LANGFLOW_AUTHZ_ENABLED`` is on; otherwise it stays
    # owner-scoped. Routes still call ``ensure_deployment_permission`` after
    # this to authorize the actor against the resolved deployment.

View on GitHub (pinned to 976ec789d2)

Solutions

1. Inspect the logged exception for the root cause and retry.

When it happens

Trigger: Occurs when resolving the deployment adapter raises an exception; the exception is surfaced.

Common situations: See trigger scenarios.

AI-assisted analysis of langflow-ai/langflow@976ec789d2 (2026-08-14). Data as JSON: /api/errors/8e22cbc8ea0319c4. Report an issue: GitHub.