HTTP 451 — 451 Unavailable For Legal Reasons

// Express.js Server Response
app.get('/api/resource', (req, res) => {
  // Returning 451 451 Unavailable For Legal Reasons
  return res.status(451).json({
    error: '451 Unavailable For Legal Reasons',
    statusCode: 451,
    timestamp: new Date().toISOString()
  });
});

// Client-side fetch error check
const response = await fetch('/api/resource');
if (response.status === 451) {
  console.warn('Received HTTP 451 451 Unavailable For Legal Reasons');
}