Update app.py

app.py

@@ -22,7 +22,7 @@ xx, yy = np.meshgrid(x, y)
 df = pl.DataFrame({'launch_angle': xx.ravel(), 'launch_speed': yy.ravel()})
 
 df = df.with_columns(
-    pl.Series('xwoba', xwoba_model.predict_proba(df.select(['launch_angle','launch_speed']) @ [0, 0.883, 1.244, 1.569, 2.004])
+    pl.Series('xwoba', xwoba_model.predict_proba(df.select(['launch_angle','launch_speed'])) @ [0, 0.883, 1.244, 1.569, 2.004])
 )
 
 df = df.with_columns(