src/Form/UwAddUsersForm.php

@@ -93,6 +93,7 @@ class UwAddUsersForm extends FormBase {
    */
   public function submitForm(array &$form, FormStateInterface $form_state) {
 
+    global $base_url;
     // The user ID list that was submitted in the form.
     $submitted_users = explode(PHP_EOL, $form_state->getValue('users'));
 
@@ -178,7 +179,7 @@ class UwAddUsersForm extends FormBase {
 
       $this->messenger()->addStatus($this->t('Created a new user with the user ID <a href="@link"><em>@user</em></a>.',
         [
-          '@link' => $this->pathAliasManager->getAliasByPath('/user/' . $new_user->id()),
+          '@link' => $base_url . $this->pathAliasManager->getAliasByPath('/user/' . $new_user->id()),
           '@user' => $user,
         ]
       ));