diff --git a/app/assets/javascripts/experiments/table.js b/app/assets/javascripts/experiments/table.js
index c7bc43316..716694c7a 100644
--- a/app/assets/javascripts/experiments/table.js
+++ b/app/assets/javascripts/experiments/table.js
@@ -499,7 +499,9 @@ var ExperimnetTable = {
     });
   },
   updateExperimentToolbar: function() {
-    window.actionToolbarComponent.fetchActions({ my_module_ids: this.selectedMyModules });
+    if (window.actionToolbarComponent) {
+      window.actionToolbarComponent.fetchActions({ my_module_ids: this.selectedMyModules });
+    }
   },
   selectDate: function($field) {
     var datePicker = $field.data('DateTimePicker');
diff --git a/app/assets/javascripts/label_templates/label_templates_datatable.js b/app/assets/javascripts/label_templates/label_templates_datatable.js
index 0c153a9d2..4e7e166bd 100644
--- a/app/assets/javascripts/label_templates/label_templates_datatable.js
+++ b/app/assets/javascripts/label_templates/label_templates_datatable.js
@@ -144,8 +144,10 @@
   }
 
   function updateButtons() {
-    window.actionToolbarComponent.fetchActions({ label_template_ids: rowsSelectedIDs() });
-    $('.dataTables_scrollBody').css('padding-bottom', `${rowsSelectedIDs().length > 0 ? 68 : 0}px`);
+    if (window.actionToolbarComponent) {
+      window.actionToolbarComponent.fetchActions({ label_template_ids: rowsSelectedIDs() });
+      $('.dataTables_scrollBody').css('padding-bottom', `${rowsSelectedIDs().length > 0 ? 68 : 0}px`);
+    }
   }
 
   function reloadTable() {
diff --git a/app/javascript/vue/navigation/navigator_item.vue b/app/javascript/vue/navigation/navigator_item.vue
index 2c29c7632..4b4e1e7c0 100644
--- a/app/javascript/vue/navigation/navigator_item.vue
+++ b/app/javascript/vue/navigation/navigator_item.vue
@@ -114,7 +114,7 @@ export default {
       }
     },
     children: function() {
-      if (this.children.length > 0) {
+      if (this.children && this.children.length > 0) {
         this.childrenExpanded = true;
       } else if (this.childrenLoaded) {
         this.item.has_children = false;