Ошибка: 0 - Using $this when not in object context - страница 2 - Joomla 3.x: Установка, обновление и настройка

Что это значит, куда вставлять?)

Единственная проблема - в админке Joomla висит такая строка: "Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/u0102373/public_html/administrator/components/com_jotcache/models/main.php on line 94".

Notice: Undefined offset: 0 in /home/r/registpf/site.ru/public_html/plugins/system/lm_any/plugins/com_content.plugin.php on line 59

	}
		} else {
			$result = $cat_res[0]['modified']; 59 строка
			if ($cat_res == "0000-00-00 00:00:00") $result = $cat_res[0]['created'];
		}
		$this->result = $result;
		$this->id = true;
	}

Ошибка
We have detected that your server is using PHP 7.0.19 which is obsolete and no longer receives official security updates by its developers. The Joomla! Project recommends upgrading your site to PHP 7.1 or later which will receive security updates at least until 01.12.19. Please ask your host to make PHP 7.1 or a later version the default version for your site. If your host is already PHP 7.1 ready please enable PHP 7.1 on your site's root and 'administrator' directories – typically you can do this yourself through a tool in your hosting control panel, but it's best to ask your host if you are unsure.

И админка ругается

сама Joomla на такое ругаться не может

ругается ругается. как бы странно это не звучало, но 7.0 уже все

Друзья, а у меня вываливается аж вот такой компот при включении отладки системы:

 Using $this when not in object context
/var/www/u0183729/data/www/XXXXXXXX.com/libraries/src/Application/CMSApplication.php:370
Call stack
#    Function    Location
1    ()    JROOT/libraries/src/Application/CMSApplication.php:370
2    Joomla\CMS\Application\CMSApplication::getMenu()    JROOT/libraries/src/Application/SiteApplication.php:275
3    Joomla\CMS\Application\SiteApplication::getMenu()    JROOT/templates/siteground-j16-46/templates.php:7
4    include()    JROOT/templates/siteground-j16-46/index.php:81
5    require()    JROOT/libraries/src/Document/HtmlDocument.php:658
6    Joomla\CMS\Document\HtmlDocument->_loadTemplate()    JROOT/libraries/src/Document/HtmlDocument.php:720
7    Joomla\CMS\Document\HtmlDocument->_fetchTemplate()    JROOT/libraries/src/Document/HtmlDocument.php:535
8    Joomla\CMS\Document\HtmlDocument->parse()    JROOT/libraries/src/Application/CMSApplication.php:1030
9    Joomla\CMS\Application\CMSApplication->render()    JROOT/libraries/src/Application/SiteApplication.php:778
10    Joomla\CMS\Application\SiteApplication->render()    JROOT/libraries/src/Application/CMSApplication.php:202
11    Joomla\CMS\Application\CMSApplication->execute()    JROOT/index.php:49

Спасибо...
Помогло
осталось "всего-то" девять строк с ошибками.

 Call to a member function getActive() on null
/var/www/u0183729/data/www/XXXXXXX.com/templates/siteground-j16-46/templates.php:9
Call stack
#    Function    Location
1    ()    JROOT/templates/siteground-j16-46/templates.php:9
2    include()    JROOT/templates/siteground-j16-46/index.php:81
3    require()    JROOT/libraries/src/Document/HtmlDocument.php:658
4    Joomla\CMS\Document\HtmlDocument->_loadTemplate()    JROOT/libraries/src/Document/HtmlDocument.php:720
5    Joomla\CMS\Document\HtmlDocument->_fetchTemplate()    JROOT/libraries/src/Document/HtmlDocument.php:535
6    Joomla\CMS\Document\HtmlDocument->parse()    JROOT/libraries/src/Application/CMSApplication.php:1030
7    Joomla\CMS\Application\CMSApplication->render()    JROOT/libraries/src/Application/SiteApplication.php:778
8    Joomla\CMS\Application\SiteApplication->render()    JROOT/libraries/src/Application/CMSApplication.php:202
9    Joomla\CMS\Application\CMSApplication->execute()    JROOT/index.php:49

Подскажите, пожалуйста, в чем может быть проблема?