Update app.py

with gr.Column(scale=2):
with gr.row():

app.py

@@ -208,7 +208,7 @@ with gr.Blocks(title="PDF Q&A Chatbot") as demo:
             pdf_status = gr.Textbox(label="Status", interactive=False)
 
         with gr.Column(scale=2):
-            with gr.row()
+            with gr.row():
                 question = gr.Textbox(label="Your question", lines=2)
                 clear_button = gr.Button("Clear Question")