n8n-io/n8n · error · Error

The provided CSV file is empty

Error message

The provided CSV file is empty

What it means

Error "The provided CSV file is empty" thrown in n8n-io/n8n.

Source

Thrown at packages/@n8n/ai-workflow-builder.ee/evaluations/cli/csv-prompt-loader.ts:52

		return rows.map((row) => row.map((cell) => cell ?? ''));
	} catch (error) {
		const message = error instanceof Error ? error.message : 'Unknown parsing error';
		throw new Error(`Failed to parse CSV file: ${message}`);
	}
}

export function loadTestCasesFromCsv(csvPath: string): TestCase[] {
	const resolvedPath = isAbsolute(csvPath) ? csvPath : resolve(process.cwd(), csvPath);

	if (!existsSync(resolvedPath)) {
		throw new Error(`CSV file not found at ${resolvedPath}`);
	}

	const rows = parseCsv(readFileSync(resolvedPath, 'utf8'));

	if (rows.length === 0) {
		throw new Error('The provided CSV file is empty');
	}

	const hasHeader = isHeaderRow(rows[0]);
	const header = hasHeader ? rows[0] : undefined;
	const dataRows = hasHeader ? rows.slice(1) : rows;

	if (dataRows.length === 0) {
		throw new Error('No prompt rows found in the provided CSV file');
	}

	// Find column index by name(s), returns undefined if no header
	const findColumn = (...names: string[]): number | undefined => {
		if (!header) return undefined;
		for (const name of names) {
			const idx = detectColumnIndex(header, name);
			if (idx !== undefined) return idx;
		}
		return undefined;

View on GitHub (pinned to 5ac6606e81)

When it happens

Trigger: Thrown at packages/@n8n/ai-workflow-builder.ee/evaluations/cli/csv-prompt-loader.ts:52 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of n8n-io/n8n@5ac6606e81 (2026-08-12). Data as JSON: /api/errors/03a103f4d5110e9a. Report an issue: GitHub.