Update app.py

app.py

@@ -126,6 +126,8 @@ def main():
     st.write("<!-- End Spacer -->", unsafe_allow_html=True)
 
     new_messages_placeholder = st.empty()
+    
+    loading_message = None  # Initialize the loading_message variable
 
     if pdf_path is not None:
         query = st.text_input("Ask questions about your PDF file (in any preferred language):")