app.php

<?php

\OC::$server->getNavigationManager()->add(function () {
    $urlGenerator = \OC::$server->getURLGenerator();
    return [
        'id' => 'sccuot_ng',
        'name' => 'Sccuot NG',
        'order' => 5,
        'href' => $urlGenerator->linkToRoute('sccuot_ng.statistics.statistics_page'),
        'icon' => $urlGenerator->imagePath('sccuot_ng', 'icons/sccuot-ng.svg'),
    ];
});