Fix Space crash: disable gradio SSR mode

app.py

@@ -532,8 +532,15 @@ fastapi_app.get("/logout")(_forward_to_gradio("/logout"))
 
 
 # root_path makes gradio generate internal links (OAuth login, etc.)
-# under /gradio instead of the app root.
-fastapi_app = gr.mount_gradio_app(fastapi_app, demo, path="/gradio", root_path="/gradio")
+# under /gradio instead of the app root. ssr_mode=False is required on
+# Spaces: SSR's node server would grab port 7860 and starve uvicorn.
+fastapi_app = gr.mount_gradio_app(
+    fastapi_app,
+    demo,
+    path="/gradio",
+    root_path="/gradio",
+    ssr_mode=False,
+)
 
 
 @fastapi_app.get("/healthz")