Update app.py

app.py

@@ -204,7 +204,7 @@ def demo():
         
         with gr.Tab("Step 2 - Process document"):
             with gr.Row():
-                db_btn = gr.Radio(["ChromaDB", "FAISS", "ScaNN", "Milvus"], label="Vector database type", value="ChromaDB", type="index", info="Choose your vector database")
+                db_type_radio = gr.Radio(["ChromaDB", "FAISS", "ScaNN", "Milvus"], label="Vector database type", value="ChromaDB", type="value", info="Choose your vector database")
             with gr.Accordion("Advanced options - Document text splitter", open=False):
                 with gr.Row():
                     slider_chunk_size = gr.Slider(minimum=100, maximum=1000, value=600, step=20, label="Chunk size", info="Chunk size", interactive=True)
@@ -251,7 +251,7 @@ def demo():
             
         # Preprocessing events
         db_btn.click(initialize_database, 
-            inputs=[document, slider_chunk_size, slider_chunk_overlap, db_btn], 
+            inputs=[document, slider_chunk_size, slider_chunk_overlap, db_type_radio], 
             outputs=[vector_db, collection_name, db_progress])
         qachain_btn.click(initialize_LLM, 
             inputs=[llm_btn, slider_temperature, slider_maxtokens, slider_topk, vector_db], 
@@ -276,4 +276,4 @@ def demo():
     demo.queue().launch(debug=True)
 
 if __name__ == "__main__":
-    demo()
+    demo()