ISTWCMS-5983: Removing extra array wrapping when loading existing user.

src/Form/UwAddUsersForm.php

@@ -86,7 +86,6 @@ class UwAddUsersForm extends FormBase {
 
   /**
    * {@inheritdoc}
-   * @throws \Exception
    */
   public function submitForm(array &$form, FormStateInterface $form_state) {
 
@@ -123,7 +122,7 @@ class UwAddUsersForm extends FormBase {
       }
 
       $existing_user = $this->entityTypeManager->getStorage('user')->loadByProperties([
-        ['name' => $user],
+        'name' => $user,
       ]);
 
       /** @var \Drupal\user\UserInterface|bool $existing_user */