Disable SSR mode to fix localhost check on HF Space

app.py

@@ -449,15 +449,13 @@ with gr.Blocks(title="Bangla Book Recommender") as demo:
     )
 
 
-# ─────────────────────────────────────────────────────────────────────────────
-# Note: We deliberately do NOT call demo.launch() here.
-#
-# On Hugging Face Spaces with Gradio 6.x, the platform's runtime spawns the
-# server itself by importing this module and serving the `demo` object.
-# Calling .launch() ourselves triggers a localhost-reachability check that
-# fails inside the Space's container, raising:
-#   "When localhost is not accessible, a shareable link must be created..."
-#
-# For local development, run: `gradio app.py` (which calls launch() for you)
-# or add `demo.launch()` back temporarily.
-# ─────────────────────────────────────────────────────────────────────────────
+if __name__ == "__main__":
+    # Gradio 6.x enables Server-Side Rendering (SSR) by default, which
+    # performs a localhost reachability check. Inside HF Space containers
+    # localhost is not accessible, causing launch() to raise:
+    #   "When localhost is not accessible, a shareable link must be created..."
+    #
+    # Disabling SSR sidesteps the check entirely. The app still renders
+    # correctly client-side. The error message itself recommends this fix:
+    #   "to disable set `ssr_mode=False` in `launch()`"
+    demo.launch(ssr_mode=False)