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app.py

@@ -1,5 +1,16 @@
 """Lost Frequency Radio backend — gradio.Server + streaming /tune."""
 
+import os
+
+# This app serves its own hand-built index.html through a FastAPI route; there
+# are no Gradio Blocks to server-side render. Gradio 6 turns SSR on by default,
+# which spins up a Node proxy (Node -> Python :7861) that immediately dies on
+# HF Spaces ("Stopping Node.js server..."), taking the whole app down with it.
+# Force SSR off before Gradio is imported. This has to be the env var, not just
+# launch(ssr_mode=False): HF's gradio runner imports this module ("demo not
+# found in __main__") instead of executing the __main__ block at the bottom.
+os.environ.setdefault("GRADIO_SSR_MODE", "false")
+
 import queue
 import re
 import threading
@@ -378,4 +389,4 @@ def finale(code: str, language: str = "es", variant: float = 0) -> str:
 
 
 if __name__ == "__main__":
-    app.launch(server_name="0.0.0.0", server_port=7860, show_error=True)
+    app.launch(server_name="0.0.0.0", server_port=7860, show_error=True, ssr_mode=False)