PHP 7.1 issue

My youjoomla templates YouPhoto is problem php 7.1 - www.kovarondra.com:

Notice: A non well formed numeric value encountered in /home/www/kovarondra.com/subdomeny/www/plugins/system/yjsg/includes/yjsgcore/yjsg_mgwidths.php on line 53

Notice: A non well formed numeric value encountered in /home/www/kovarondra.com/subdomeny/www/plugins/system/yjsg/legacy/yjsgcore/yjsg_head.php on line 373

Notice: A non well formed numeric value encountered in /home/www/kovarondra.com/subdomeny/www/plugins/system/yjsg/legacy/yjsgcore/yjsg_head.php on line 374
Notice: Only variables should be assigned by reference in /home/www/kovarondra.com/subdomeny/www/modules/mod_yj_acc_slider/yjme/headfiles.php on line 13

Notice: Only variables should be assigned by reference in /home/www/kovarondra.com/subdomeny/www/modules/mod_yj_acc_slider/helper.php on line 22

Notice: Only variables should be assigned by reference in /home/www/kovarondra.com/subdomeny/www/modules/mod_yj_acc_slider/helper.php on line 23

Notice: Only variables should be assigned by reference in /home/www/kovarondra.com/subdomeny/www/modules/mod_yj_acc_slider/helper.php on line 27

Notice: Only variables should be assigned by reference in /home/www/kovarondra.com/subdomeny/www/modules/mod_yj_acc_slider/helper.php on line 30
Warning: Illegal string offset 'itemscope' in /home/www/kovarondra.com/subdomeny/www/plugins/system/yjsg/includes/yjsgcore/classes/yjsg.class.php on line 1153

Warning: Cannot assign an empty string to a string offset in /home/www/kovarondra.com/subdomeny/www/plugins/system/yjsg/includes/yjsgcore/classes/yjsg.class.php on line 1153

Warning: Illegal string offset 'itemtitle' in /home/www/kovarondra.com/subdomeny/www/plugins/system/yjsg/includes/yjsgcore/classes/yjsg.class.php on line 1154

....... and a number of other errors

What is your CMS version?: Joomla 3.6.5
MySQL Version: 5.6
PHP version: 7.1

Hello ondrakovar.
Please follow forum rules and open new thread when you have questions.
First try to download the latest version of framework plugin and just re-install it after that check if the errors are still showing.
http://www.youjoomla.com/joomla-exte...s#files_holder
Also please pm me with your site link, admin and cPanel or FTP info's so i can check for the files.

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