Update app.py

app.py

@@ -153,14 +153,12 @@ def main():
             loading_message.empty()
 
             query = ""
-        else:
-            st.warning("Please upload a PDF file before asking questions.")
+    else:
+        st.warning("Please enter a query before asking questions.")
 
-        st.session_state['chat_history'] = [(sender, msg, "old") for sender, msg, _ in st.session_state['chat_history']]
-    
+    st.session_state['chat_history'] = [(sender, msg, "old") for sender, msg, _ in st.session_state['chat_history']]
     
     my_component()
 
-
 if __name__ == "__main__":
     main()