Resolve #3467655 "2.0.0 beta2 field formatters"

Closes #3467655

modules/ui_patterns_field_formatters/src/Plugin/Field/FieldFormatter/ComponentFormatterBase.php

@@ -122,7 +122,8 @@ abstract class ComponentFormatterBase extends FormatterBase {
     $settings = $this->getSetting('ui_patterns');
     $summary["selected"] = $this->t('No component selected.')->render();
     if (!empty($settings['component_id'])) {
-      $summary["selected"] = $this->t('Component ":component" selected.', [':component' => $options[$settings['component_id']]])->render();
+
+      $summary["selected"] = $this->t('Component ":component" selected.', [':component' => $options[$settings['component_id']] ?? ""])->render();
     }
     return $summary;
   }