Critical Issue

Good afternoon. We currently have plugin version 5.3.5 installed on our website. But when it is updated to the latest version, a critical problem appears on the site. She is accompanied by that the store manager cannot log in to the admin panel, and the following error is sent to the mail

Версия WordPress 6.1.1
Текущая тема: Beknown Child (версия 1.0.0)
Проблемный плагин: Really Simple SSL pro (версия 5.4.0)
Версия PHP 7.4.32

Подробности ошибки
===================================
Ошибка с типом E_ERROR возникла на строке 957 файла /home/368978.cloudwaysapps.com/tzybmcaqdc/public_html/wp-content/plugins/really-simple-ssl-pro/class-premium-options.php. Сообщение об ошибке: Uncaught Error: Call to a member function get_help_tip() on null in /home/368978.cloudwaysapps.com/tzybmcaqdc/public_html/wp-content/plugins/really-simple-ssl-pro/class-premium-options.php:957
Stack trace:
#0 /home/368978.cloudwaysapps.com/tzybmcaqdc/public_html/wp-includes/class-wp-hook.php(308): rsssl_premium_options->add_pro_settings()
#1 /home/368978.cloudwaysapps.com/tzybmcaqdc/public_html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters()
#2 /home/368978.cloudwaysapps.com/tzybmcaqdc/public_html/wp-includes/plugin.php(517): WP_Hook->do_action()
#3 /home/368978.cloudwaysapps.com/tzybmcaqdc/public_html/wp-admin/admin.php(175): do_action()
#4 /home/368978.cloudwaysapps.com/tzybmcaqdc/public_html/wp-admin/index.php(10): require_once('/home/368978.cl...')
#5 {main}
  thrown