n8n-io/n8n · error

Failed to write sandbox workspace file "${path}": ${getError

Error message

Failed to write sandbox workspace file "${path}": ${getErrorMessage(error)}; command fallback failed: ${getErrorMessage(fallbackError)}

What it means

Error "Failed to write sandbox workspace file "${path}": ${getErrorMessage(error)}; command fallback failed: ${getErrorMessage(fallbackError)}" thrown in n8n-io/n8n.

Source

Thrown at packages/@n8n/instance-ai/src/workspace/sandbox-setup.ts:376

				`Failed to create sandbox workspace directory "${path}": ${getErrorMessage(error)}; command fallback failed: ${getErrorMessage(fallbackError)}`,
			);
		}
	}
}

async function writeWorkspaceFile(
	workspace: SandboxWorkspace,
	filesystem: WorkspaceFilesystem,
	path: string,
	content: string | Buffer,
): Promise<void> {
	try {
		await filesystem.writeFile(path, content, { recursive: true });
	} catch (error) {
		try {
			await writeFileViaSandbox(workspace, path, content);
		} catch (fallbackError) {
			throw new Error(
				`Failed to write sandbox workspace file "${path}": ${getErrorMessage(error)}; command fallback failed: ${getErrorMessage(fallbackError)}`,
			);
		}
	}
}

async function readWorkspaceFile(
	workspace: SandboxWorkspace,
	path: string,
): Promise<string | null> {
	const filesystem = workspace.filesystem;
	if (filesystem?.readFile) {
		try {
			const content = await filesystem.readFile(path, { encoding: 'utf-8' });
			return typeof content === 'string' ? content : content.toString('utf-8');
		} catch {
			if (!workspace.sandbox) return null;
		}

View on GitHub (pinned to 5ac6606e81)

When it happens

Trigger: Thrown at packages/@n8n/instance-ai/src/workspace/sandbox-setup.ts:376 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/66c9f59913ee836c. Report an issue: GitHub.