Update app.py

app.py

@@ -120,10 +120,10 @@ with st.container():
             fn=render_file, inputs=[pdf_upload], outputs=[show_img] 
         )
 
-if __name__ == "__main__":
+if __name__ == "__main__":    
     gr.Interface(
-        [render_first, add_text, generate_response, render_file],
-        [pdf_upload, chatbot, txt, pdf_upload, pdf_upload],
-        [show_img, chatbot, txt, show_img],
-        title="PDF-Powered Chatbot",
+        [render_first, add_text, generate_response, render_file],        
+        [pdf_upload1, chatbot, txt, pdf_upload2, pdf_upload3],  # Unique names!       
+        [show_img, chatbot, txt, show_img],        
+        title="PDF-Powered Chatbot",    
     ).launch()