Update app.py

app.py

@@ -904,6 +904,9 @@ def send_whatsjet_message(phone_number: str, message: str, media_type: str = Non
                 response = requests.get(media_path, stream=True, timeout=15)
                 response.raise_for_status()
                 media_content = response.content
+                # Log the first 20 bytes and content type
+                logger.info(f"[WhatsJet][DEBUG] Downloaded image content-type: {response.headers.get('Content-Type')}")
+                logger.info(f"[WhatsJet][DEBUG] First 20 bytes: {media_content[:20]}")
             else:
                 # Read from local file
                 with open(media_path, 'rb') as f: