diff --git a/flaml/tune/tune.py b/flaml/tune/tune.py
index 29c05f771..8fbe2042e 100644
--- a/flaml/tune/tune.py
+++ b/flaml/tune/tune.py
@@ -64,7 +64,11 @@ class ExperimentAnalysis(EA):
             return self.get_best_config(self.default_metric, self.default_mode)
 
     def lexico_best(self, trials):
-        results = {index: trial.last_result for index, trial in enumerate(trials)}
+        results = {
+            index: trial.last_result
+            for index, trial in enumerate(trials)
+            if trial.last_result
+        }
         metrics = self.lexico_objectives["metrics"]
         modes = self.lexico_objectives["modes"]
         f_best = {}
diff --git a/notebook/automl_classification.ipynb b/notebook/automl_classification.ipynb
index 3d0561d3f..c16338203 100644
--- a/notebook/automl_classification.ipynb
+++ b/notebook/automl_classification.ipynb
@@ -71,6 +71,15 @@
     "X_train, X_test, y_train, y_test = load_openml_dataset(dataset_id=1169, data_dir='./')"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "X_train.head()"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {
@@ -1283,7 +1292,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.15 (main, Oct 26 2022, 03:47:43) \n[GCC 10.2.1 20210110]"
+   "version": "3.9.16 (main, Dec  8 2022, 02:40:11) \n[GCC 10.2.1 20210110]"
   },
   "vscode": {
    "interpreter": {