Plugin Installation issue

[allampraveen]

`PHP Notice – yii\base\ErrorException
Undefined offset: 12

1. in /var/www/craftcms/releases/6/vendor/ether/tags/src/TagManager.php at line 113
   public function onRegisterCpNavItems (RegisterCpNavItemsEvent $event)
   {
   $navItems = $event->navItems;
   $i = count($navItems);

    $tagsNavItemIndex = null;
   
    while (--$i)
    {
        $item = $navItems[$i];
        $url = array_key_exists('url', $item) ? $item['url'] : null;
   
        if ($url === 'tags')
        {
            $tagsNavItemIndex = $i;
            continue;
        }
   
        if (in_array($url, ['dashboard', 'entries', 'globals', 'categories']))
            `