Remove direct calls to App->user

src/Module/Settings/Profile/Photo/Index.php

@@ -134,7 +134,7 @@ class Index extends BaseSettings
 				DI::l10n()->t('or'),
 				($newuser) ?
 					'<a href="' . DI::baseUrl() . '">' . DI::l10n()->t('skip this step') . '</a>'
-					: '<a href="' . DI::baseUrl() . '/photos/' . DI::app()->user['nickname'] . '">'
+					: '<a href="' . DI::baseUrl() . '/photos/' . DI::app()->getNickname() . '">'
 						. DI::l10n()->t('select a photo from your photo albums') . '</a>'
 			),
 		]);