n8n-io/n8n · warning · NodeOperationError

Video task ${taskId} did not complete within the maximum pol

Error message

Video task ${taskId} did not complete within the maximum polling time. You can query the task manually using the task ID.

What it means

Thrown by pollVideoTask when the loop exceeds MAX_POLL_ATTEMPTS (60) without hitting a terminal status. With DEFAULT_POLL_INTERVAL_MS of 15000, this caps total polling at roughly 15 minutes. The error is recoverable: the task is not necessarily failed, just not yet terminal, and the user is told they can query it manually via the task ID.

Source

Thrown at packages/@n8n/nodes-langchain/nodes/vendors/MiniMax/transport/index.ts:82

				const errorMessage = response?.base_resp?.status_msg || 'Video generation task failed';
				throw new NodeOperationError(this.getNode(), `Task failed: [${errorCode}] ${errorMessage}`);
			}

			const fileId = response?.file_id as string;
			if (!fileId) {
				throw new NodeOperationError(
					this.getNode(),
					'Video generation succeeded but no file_id was returned',
				);
			}

			return { fileId, status };
		}

		await sleep(pollIntervalMs);
	}

	throw new NodeOperationError(
		this.getNode(),
		`Video task ${taskId} did not complete within the maximum polling time. You can query the task manually using the task ID.`,
	);
}

export async function getVideoDownloadUrl(
	this: IExecuteFunctions,
	fileId: string,
): Promise<string> {
	const response = await apiRequest.call(this, 'GET', '/files/retrieve', {
		qs: { file_id: fileId },
	});

	const downloadUrl = response?.file?.download_url as string;
	if (!downloadUrl) {
		throw new NodeOperationError(
			this.getNode(),
			`Failed to retrieve download URL for file ${fileId}`,

View on GitHub (pinned to 5ac6606e81)

Solutions

1. Capture the taskId from the error context and re-query GET /query/video_generation?task_id=<id> manually until terminal.
2. If pollVideoTask accepts a larger pollIntervalMs in your call path, raise it (note: total budget = attempts × interval).
3. Wait a few minutes and resubmit a polling check for the same task rather than creating a new one.
4. For routinely slow jobs, consider lowering resolution/duration so renders finish within the window.

// The timeout is governed by MAX_POLL_ATTEMPTS (60) and pollIntervalMs (default 15000),
// i.e. ~15 min budget. If your call path lets you pass pollIntervalMs, size it so
// attempts * interval covers your worst-case render time.
function sizePollInterval(maxAttempts: number, expectedRenderMs: number): number {
  return Math.ceil(expectedRenderMs / maxAttempts);
}

function isPollingTimeoutError(e: unknown): boolean {
  return e instanceof NodeOperationError && /did not complete within the maximum polling time/.test(e.message);
}

let result: { fileId: string; status: string };
try {
  result = await pollVideoTask.call(this, taskId);
} catch (error) {
  if (error instanceof NodeOperationError && /did not complete within the maximum polling time/.test(error.message)) {
    // Task is still running — keep the task_id and let the user re-query later.
    return [{ json: { taskId, status: 'still-running', message: 'Polling timed out; query the task manually.' } }];
  }
  throw error;
}

When it happens

Trigger: Video rendering genuinely takes longer than 15 minutes (long/high-resolution videos); MiniMax backend under heavy load queuing the job; a custom pollIntervalMs was passed that, combined with MAX_POLL_ATTEMPTS=60, shortens the window; the job is stuck in a non-terminal status indefinitely.

Common situations: High-resolution or long-duration videos on a loaded backend; a caller passing a small pollIntervalMs which reduces total wall-clock budget; account in a slow queue tier; transient MiniMax slowness.

Related errors

• Task ${taskId} did not complete within the maximum polling t
• Task failed: [${errorCode}] ${errorMessage}
• Video generation succeeded but no file_id was returned
• 500
• Task failed: [${errorCode}] ${errorMessage}

AI-assisted analysis of n8n-io/n8n@5ac6606e81 (2026-08-12). Data as JSON: /api/errors/745445fa9e94d5db. Report an issue: GitHub.