runtime error

Exit code: 1. Reason: /app/app.py:189: UserWarning: You have not specified a value for the `type` parameter. Defaulting to the 'tuples' format for chatbot messages, but this is deprecated and will be removed in a future version of Gradio. Please set type='messages' instead, which uses openai-style dictionaries with 'role' and 'content' keys. chatbot = gr.Chatbot( Traceback (most recent call last): File "/app/app.py", line 228, in <module> outputs=[status_message, pdf_text, chatbot] NameError: name 'pdf_text' is not defined

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