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main.py

@@ -57,6 +57,7 @@ async def receive_update(req: Request):
             "type": "text",
             "text": {"body": reply}
         }
+        # send via WhatsApp Cloud API, capture response
         resp = httpx.post(
             f"https://graph.facebook.com/v23.0/{PHONE_NUMBER_ID}/messages",
             headers={
@@ -65,7 +66,17 @@ async def receive_update(req: Request):
             },
             json=payload
         )
-        resp.raise_for_status()
+        # log full request and response for debugging
+        print("Outgoing payload:", payload)
+        print("Response status code:", resp.status_code)
+        print("Response body:", resp.text)
+        # do not raise; return status
+        if resp.status_code != 200:
+            return JSONResponse({
+                "status": "error",
+                "code": resp.status_code,
+                "body": resp.text
+            }, status_code=500)
         return JSONResponse({"status": "image_preview_sent", "preview": preview})
     # 2) Existing text handler
     if msg["type"] != "text":