Update app.py

app.py

@@ -100,6 +100,7 @@ def upload_pdf(file):
  
 with gr.Blocks() as demo:  
     btn = gr.UploadButton("📁 Upload a PDF", file_types=[".pdf"])
+    output = gr.Textbox(label="Output Box")
     chatbot = gr.Chatbot(value=[], elem_id="chatbot")
     with gr.Row():
         with gr.Column(scale=0.70):
@@ -111,7 +112,7 @@ with gr.Blocks() as demo:
  
     # Event handler for uploading a PDF
             
-    btn.upload(fn=upload_pdf, inputs=[btn], outputs=[btn])
+    btn.upload(fn=upload_pdf, inputs=[btn], outputs=[output])