Update app.py

app.py

@@ -147,6 +147,12 @@ import streamlit as st
 
 # demo.launch(server_port=7861) 
 
+def add_text(history, text):
+    if not text:
+        raise gr.Error('Enter text')
+    history = history + [(text, '')]
+    return history
+
 def render_first(pdf_file): 
     # ... Logic to process the PDF (extract text, create summary, etc.)
     # ... Generate a simple image as a placeholder