Update app.py

app.py

@@ -75,8 +75,8 @@ with gr.Blocks(css=css) as demo:
         question = gr.Textbox(label="Question", placeholder="Type your question and hit Enter ")
         submit_btn = gr.Button("Send message")
     #load_pdf.click(loading_pdf, None, langchain_status, queue=False)    
-    repo_id.change(pdf_changes, inputs=[pdf_doc, repo_id], langchain_status, queue=False)
-    load_pdf.click(pdf_changes, inputs=[pdf_doc, repo_id], langchain_status, queue=False)
+    repo_id.change(pdf_changes, inputs=[pdf_doc, repo_id], outputs=[langchain_status], queue=False)
+    load_pdf.click(pdf_changes, inputs=[pdf_doc, repo_id], outputs=[langchain_status], queue=False)
     question.submit(add_text, [chatbot, question], [chatbot, question]).then(
         bot, chatbot, chatbot
     )