Update app.py

app.py

@@ -319,7 +319,7 @@ if selected_app == "4) Create Chatbot":
             if missing_info:
                 error = "Missing Info: "
                 for info in missing_info:
-                    error += info
+                    error += (info + ', ')
                 st.session_state.clear()
                 st.session_state.error = error
                 st.rerun()