Проблем след обнавяване на

Здравейте,

Пиша във връзка с проблем, който възникна след обновяване на сайта в версия на WordPress 5.8.3

Тези грешки излизат в горната част на админ панела:

Axiom_Plugin_Updater::download_package($package) should be compatible with WP_Upgrader::download_package($package, $check_signatures = false, $hook_extra = Array) in /home/blogdeca/public_html/wp-content/plugins/masterslider/admin/includes/classes/class-axiom-plugin-updater.php on line 29

Warning: Cannot modify header information - headers already sent by (output started at /home/blogdeca/public_html/wp-content/plugins/masterslider/admin/includes/classes/class-axiom-plugin-updater.php:29) in /home/blogdeca/public_html/wp-includes/functions.php on line 6712

Warning: Cannot modify header information - headers already sent by (output started at /home/blogdeca/public_html/wp-content/plugins/masterslider/admin/includes/classes/class-axiom-plugin-updater.php:29) in /home/blogdeca/public_html/wp-admin/includes/misc.php on line 1310

Warning: Cannot modify header information - headers already sent by (output started at /home/blogdeca/public_html/wp-content/plugins/masterslider/admin/includes/classes/class-axiom-plugin-updater.php:29) in /home/blogdeca/public_html/wp-admin/admin-header.php on line 9

Освен това, когато се опитам да публикувам нова статия се появява тази грешка. Статията успява да се публикува, но все пак винаги препраща към това:

Warning: Declaration of Axiom_Plugin_Updater::download_package($package) should be compatible with WP_Upgrader::download_package($package, $check_signatures = false, $hook_extra = Array) in /home/blogdeca/public_html/wp-content/plugins/masterslider/admin/includes/classes/class-axiom-plugin-updater.php on line 29

Warning: Cannot modify header information - headers already sent by (output started at /home/blogdeca/public_html/wp-content/plugins/masterslider/admin/includes/classes/class-axiom-plugin-updater.php:29) in /home/blogdeca/public_html/wp-includes/functions.php on line 6712

Warning: Cannot modify header information - headers already sent by (output started at /home/blogdeca/public_html/wp-content/plugins/masterslider/admin/includes/classes/class-axiom-plugin-updater.php:29) in /home/blogdeca/public_html/wp-admin/includes/misc.php on line 1310

Warning: Cannot modify header information - headers already sent by (output started at /home/blogdeca/public_html/wp-content/plugins/masterslider/admin/includes/classes/class-axiom-plugin-updater.php:29) in /home/blogdeca/public_html/wp-admin/post.php on line 231

Warning: Cannot modify header information - headers already sent by (output started at /home/blogdeca/public_html/wp-content/plugins/masterslider/admin/includes/classes/class-axiom-plugin-updater.php:29) in /home/blogdeca/public_html/wp-includes/pluggable.php on line 1340

Warning: Cannot modify header information - headers already sent by (output started at /home/blogdeca/public_html/wp-content/plugins/masterslider/admin/includes/classes/class-axiom-plugin-updater.php:29) in /home/blogdeca/public_html/wp-includes/pluggable.php on line 1343

За съжаление тепърва навлизам в насторйките спецификите на WordPress и нямам идея как би могло това да се оправи. Ще бъда много благодарен за съдействие от къде идва проблемът.