Update app.py

app.py

@@ -132,4 +132,5 @@ def demo():
 
         document.upload(initialize_demo, inputs=[document, slider_chunk_size, slider_chunk_overlap, db_progress], outputs=[vector_db, collection_name, qa_chain, db_progress])
         qachain_btn.click(initialize_llmchain, inputs=[qa_chain, llm_progress], outputs=[qa_chain, llm_progress])
-        submit_btn.click(lambda: None, inputs=None, outputs=[chatbot, doc_source1, source1_page, doc_source2
+        submit_btn.click(lambda: None, inputs=None, outputs=[chatbot, doc_source1, source1_page, doc_source2, source2_page, doc_source3, source3_page])
+