Update app.py

app.py

@@ -175,6 +175,7 @@ def _(get_label, mo):
 @app.cell
 def _(X, cosine_similarity, form, mo, pl, texts, tfm):
     mo.stop(form is None, "Need a query input to fetch example")
+    mo.stop(form.value is None, "Need a query input to fetch example")
 
     df_emb = (
         pl.DataFrame({