wms-menu/partials/menu/main/_system_sidebar_menu.phtml

<?php
    if ($sideMenuItems = BackendMenu::listSideMenuItems()):
        $collapsedGroups = explode('|',
            isset($_COOKIE['sidenav_treegroupStatus'])
                ? $_COOKIE['sidenav_treegroupStatus']
                : null
        );

        $categories = [];

        foreach ($sideMenuItems as $sideItemCode => $item) {
            $categories[$item->attributes['group']][$sideItemCode] = $item;
        }
?>
    <ul class="top-level">
        <?php foreach ($categories as $category => $items):
            $collapsed = in_array($category, $collapsedGroups); ?>
            <li data-group-code="<?= e($category) ?>" <?= $collapsed ? 'data-status="collapsed"' : null ?>>
                <div class="group">
                    <h3><?= e(trans($category)); ?></h3>
                </div>
                <ul>
                    <?php foreach ($items as $item):
                        $last_path = array_last(explode('/', request()->path())); ?>
                        <li class="<?=
                                ((BackendMenu::isSideMenuItemActive($item) && empty($item->scontents))
                                || (
                                    isset($item->scontents)
                                    && $item->scontents == $last_path
                                ))
                                    ? 'active'
                                    : null;
                            ?>" data-keywords="<?= e(trans($item->attributes['keywords'])) ?>">
                            <a href="<?= $item->url ?>">
                                <?php if ($item->attributes['icon_base64']):?>
                                    <img src="<?=$item->attributes['icon_base64']?>" alt="<?= e(trans($item->label)) ?>" title="<?= e(trans($item->label)) ?>">
                                    <img src="<?=$item->attributes['icon_base64_minimized'] ? : $item->attributes['icon_base64']?>" class="minimized" alt="<?= e(trans($item->label)) ?>" title="<?= e(trans($item->label)) ?>">
                                <?php elseif (isset($item->icon)): ?>
                                    <i class="<?= $item->icon ?>"></i>
                                <?php endif;?>
                                <span class="header"><?= e(trans($item->label)) ?></span>
                                <span class="description"><?= e(trans($item->attributes['description'])) ?></span>
                            </a>
                        </li>
                    <?php endforeach ?>
                </ul>
            </li>
        <?php endforeach ?>
    </ul>
<?php endif; ?>