Update app.py

app.py

@@ -366,9 +366,10 @@ async def play():
                 <div id="swagger-ui"></div>
                 <script src="{get_swagger_ui_html.__kwdefaults__["swagger_js_url"]}"></script>
                 <script>
+                    const spec = {json.dumps(display, ensure_ascii=False).replace("</", "<\\/")}
                     const ui = SwaggerUIBundle({{
                         dom_id: 'swagger-ui',
-                        spec: {display},
+                        spec: {json.dumps(display)},
                         layout: 'BaseLayout',
                         presets: [
                             SwaggerUIBundle.presets.apis,