Update app.py

app.py

@@ -55,7 +55,7 @@ def _(uploaded_file, use_default_switch):
 
 @app.cell
 def _(mo, pl, should_stop, uploaded_file, use_default_switch):
-    mo.stop(should_stop , mo.md("**Submit a dataset or use default one to continue.**"))
+    mo.stop(not form.value.get("text_input", None), "Need a text input to fetch example")
 
     if use_default_switch.value:
         df = pl.read_csv("spam.csv")