Update app.py

app.py

@@ -178,7 +178,7 @@ with gr.Blocks() as demo:
         with gr.Group():
             url = gr.Textbox(label='URL')
             gr.Markdown("<center><h6>or<h6></center>")
-            file = gr.File(label='PDF', file_types=['.pdf'], file_count="multiple")
+            file = gr.File(label='PDF', file_types=['.pdf'])
             question = gr.Textbox(label='question')
             api_key = gr.Textbox(label='OpenAI API Key')
             btn = gr.Button(value='Submit')