Update app.py

app.py

@@ -91,7 +91,7 @@ with gr.Blocks(css=css) as demo:
             pdf_doc = gr.File(label="Load a PDF", file_types=['.pdf'], type="filepath")
             load_pdf = gr.Button("Load PDF")
             langchain_status = gr.Textbox(label="Status", placeholder="", interactive=False)
-        chatbot = gr.Chatbot([], elem_id="chatbot").style(height=350)
+        chatbot = gr.Chatbot([], elem_id="chatbot").scale(height=350)
         question = gr.Textbox(label="Question", placeholder="Type your question and hit Enter ")
         submit_btn = gr.Button("Send message") 
     load_pdf.click(pdf_changes, inputs=[pdf_doc], outputs=[langchain_status], queue=False)