Cancer nourri… à la viande rouge

Notice (8): Undefined offset: -1 [CORE/plugins/plugin_as/views/helpers/articles.php, line 38]
Code
            $nb_matches = preg_match_all($pattern, $contenu, $matches);

            $moitie = $nb_matches / 2;

            $contenu = preg_replace('#' . preg_quote($matches[0][$moitie - 1]) . '#', '$0{{#if ACCES::estConnecte()}}{{#else}}


{{#endif}}', $contenu, 1, $count);
FacebookAds\CrashReporter::FacebookAds\{closure}() - CORE/vendor/facebook/php-business-sdk/src/FacebookAds/CrashReporter.php, line 154
ArticlesHelper::contenu_avec_pub() - CORE/plugins/plugin_as/views/helpers/articles.php, line 38
ArticlesHelper::contenu_article() - CORE/plugins/plugin_as/views/helpers/articles.php, line 8
include - APP/views/plugins/plugin_as/default/articles/article.ctp, line 292
View::_render() - CORE/cake/libs/view/view.php, line 736
View::render() - CORE/cake/libs/view/view.php, line 431
Controller::render() - CORE/cake/libs/controller/controller.php, line 908
AppController::render() - APP/app_controller.php, line 165
Dispatcher::_invoke() - CORE/cake/dispatcher.php, line 207
Dispatcher::dispatch() - CORE/cake/dispatcher.php, line 171
[main] - APP/webroot/index.php, line 95