Update app.py

app.py

@@ -37,7 +37,7 @@ def proxy():
                 tag['src'] = '/proxy?url=' + tag['src']
             content = soup.prettify(formatter="html")
 
-        return content, response.status_code, response.headers.items()
+        return content, response.status_code, headers
     except requests.RequestException as e:
         return jsonify({'error': str(e)}), 500