デバッグモード1で固定ページ情報編集を表示すると、[プレビュー用URL：]とURLの間にWarning表示が2つ出る

Warning (2): preg_match() expects parameter 2 to be string, array given [CORE/Baser/View/Helper/BcBaserHelper.php, line 1403]
Code Context
preg_match - [internal], line ??
BcBaserHelper::getUri() - CORE/Baser/View/Helper/BcBaserHelper.php, line 1403
include - CORE/Baser/View/Pages/admin/form.php, line 352
View::_evaluate() - CORE/Cake/View/View.php, line 948
View::_render() - CORE/Cake/View/View.php, line 910
View::render() - CORE/Cake/View/View.php, line 471
Controller::render() - CORE/Cake/Controller/Controller.php, line 954
PagesController::admin_edit() - CORE/Baser/Controller/PagesController.php, line 452
ReflectionMethod::invokeArgs() - [internal], line ??
Controller::invokeAction() - CORE/Cake/Controller/Controller.php, line 490
Dispatcher::_invoke() - CORE/Cake/Routing/Dispatcher.php, line 191
Dispatcher::dispatch() - CORE/Cake/Routing/Dispatcher.php, line 165
require - APP/webroot/index.php, line 146
[main] - ROOT/index.php, line 53