مشکل در نصب بسته نصبی sj-news

وقتی این بسته را نصب میکنم و به صفحه اصلی میروم پیغام زیر را میدهد

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Strict Standards: Declaration of YtUtils::resize() should be compatible with YTools::resize($image, $width, $height = NULL, $config = Array) in C:\xampp\htdocs\sj\plugins\system\sjcore\core\ytools\ytools.php on line 758

Strict Standards: Static function SjModule::getList() should not be abstract in C:\xampp\htdocs\sj\plugins\system\sjcore\core\sjclass\sjmodule.php on line 20

Strict Standards: Static function SjModule::getInstance() should not be abstract in C:\xampp\htdocs\sj\plugins\system\sjcore\core\sjclass\sjmodule.php on line 21

Strict Standards: Only variables should be assigned by reference in C:\xampp\htdocs\sj\plugins\system\k2\k2.php on line 320

Strict Standards: Only variables should be assigned by reference in C:\xampp\htdocs\sj\plugins\system\k2\k2.php on line 27

Strict Standards: Only variables should be assigned by reference in C:\xampp\htdocs\sj\plugins\system\k2\k2.php on line 44

Strict Standards: Only variables should be assigned by reference in C:\xampp\htdocs\sj\plugins\system\k2\k2.php on line 46

Strict Standards: Only variables should be assigned by reference in C:\xampp\htdocs\sj\plugins\system\k2\k2.php on line 120

Strict Standards: Only variables should be assigned by reference in C:\xampp\htdocs\sj\plugins\system\k2\k2.php on line 125

Strict Standards: Only variables should be assigned by reference in C:\xampp\htdocs\sj\plugins\system\k2\k2.php on line 132

Strict Standards: Only variables should be assigned by reference in C:\xampp\htdocs\sj\plugins\system\yt\yt.php on line 21

Strict Standards: Only variables should be passed by reference in C:\xampp\htdocs\sj\plugins\system\yt\includes\libs\yt-minify.php on line 128

Strict Standards: Only variables should be assigned by reference in C:\xampp\htdocs\sj\templates\sj_worldnews\includes\yt_template.class.php on line 219

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