fix launch error

app.py

@@ -63,4 +63,9 @@ with gr.Blocks(title="📚 RAG App — No API Key") as demo:
     ask_btn.click(chat, inputs=[query_box, chatbot], outputs=chatbot)
     query_box.submit(chat, inputs=[query_box, chatbot], outputs=chatbot)
 
-demo.launch(ssr_mode=False)
+demo.launch(
+    server_name="0.0.0.0", 
+    server_port=7860,
+    ssr_mode=False,
+    show_error=True,
+    quiet=False)