Update app.js

app.js

@@ -135,6 +135,10 @@ app.post('/webhook/paystack', (req, res) => {
 app.post('/create-payment-link', express.json(), async (req, res) => {
   const { planId, userId, name, amount, redirect_url, collect_phone = false, fixed_amount = false } = req.body || {};
 
+  console.log('headers:', req.headers['content-type']);
+console.log('isBuffer:', Buffer.isBuffer(req.body));
+console.log('bodyType:', typeof req.body);
+  
   if (!planId) return res.status(400).json({ ok: false, message: 'planId is required' });
   if (!userId) return res.status(400).json({ ok: false, message: 'userId is required' });
   if (!name) return res.status(400).json({ ok: false, message: 'name is required (page title)' });