Issue #2293749 by joshi.rohit100: Fixed Use ->url() in Forum module in overview form.

core/modules/forum/src/Form/Overview.php

@@ -100,8 +100,8 @@ public function buildForm(array $form, array &$form_state) {
     // Use the existing taxonomy overview submit handler.
     $form['#submit'] = array(array($this, 'submitForm'));
     $form['terms']['#empty'] = $this->t('No containers or forums available. <a href="@container">Add container</a> or <a href="@forum">Add forum</a>.', array(
-      '@container' => $this->urlGenerator()->generateFromPath('admin/structure/forum/add/container'),
-      '@forum' => $this->urlGenerator()->generateFromPath('admin/structure/forum/add/forum')
+      '@container' => $this->url('forum.add_container'),
+      '@forum' => $this->url('forum.add_forum')
     ));
     return $form;
   }