Update app.py

app.py

@@ -98,6 +98,7 @@ with gr.Blocks() as demo:
     change_api_key.click(fn=enable_api_box, outputs=[enable_box])
 
     # Event handler for uploading a PDF
+    pdf_upload = gr.UploadButton("📁 Upload a PDF", file_types=[".pdf"]) 
     pdf_upload.upload(fn=render_first, inputs=[pdf_upload], outputs=[show_img])
 
     # Event handler for submitting text and generating response