diff --git a/index.js b/index.js
index ab6094c..8b3b03b 100644
--- a/index.js
+++ b/index.js
@@ -269,41 +269,41 @@ app.post('/sendProductMessage', async (req, res) => {
   try {
     const jid = `${phone}@s.whatsapp.net`;
 
-    // Construire le payload "product"
+    // 4.1) Construire le payload "product"
     const productPayload = {
-      productImage: { url: productImageUrl },
+      productImage:   { url: productImageUrl },     // ou buffer si vous préférez
       productImageCount,
-      title:            productTitle,
-      description:      productDescription,
-      priceAmount1000:  priceAmount1000 * 1000, // si vous avez déjà *1000, retirez l’opération
+      title:             messageTitle,
+      description:       productDescription,
+      priceAmount1000:   priceAmount1000 * 1000,   // attention au facteur 1000
       currencyCode,
       retailerId,
-      url: productUrl
+      url:               productUrl
     };
 
-    // Transformer vos boutons simples en format Baileys
+    // 4.2) Transformer les boutons
     const buttons = interactiveButtons.map(btn => {
       const params = {};
-      if (btn.id)    params.id           = btn.id;
-      if (btn.url)   params.url          = btn.url;
+      if (btn.id)           params.id           = btn.id;
+      if (btn.url)          params.url          = btn.url;
       if (btn.display_text) params.display_text = btn.display_text;
       return {
-        name: btn.name,
-        buttonParamsJson: JSON.stringify(params)
+        name:              btn.name,
+        buttonParamsJson:  JSON.stringify(params)
       };
     });
 
-    // Envoi du message
+    // 4.3) Envoi du message
     await client.sendMessage(
       jid,
       {
-        product: productPayload,
+        product:             productPayload,
         businessOwnerJid,
         caption,
-        title:   messageTitle,
+        title:               messageTitle,
         footer,
-        media:   true,
-        interactiveButtons: buttons
+        media:               true,
+        interactiveButtons:  buttons
       },
       quoted ? { quoted } : {}
     );
@@ -314,4 +314,11 @@ app.post('/sendProductMessage', async (req, res) => {
     return res.status(500).json({ error: e.message });
   }
 });
+
+// 5) 404 et gestion des erreurs
+app.use((req, res) => res.status(404).json({ error: 'Ressource introuvable' }));
+app.use((err, req, res, next) => {
+  console.error('Middleware d’erreur :', err);
+  res.status(500).json({ error: err.message });
+});
 app.listen(3001, () => console.log('🚀 Serveur Baileys démarré sur http://localhost:3001'));