Endless Deprecated: Creation of dynamic property..

Hello,
more and more hosting providers are upgrading PHP and now, if I enable debug mode, I get an endless stream of warnings, like:

Deprecated: Creation of dynamic property sapAdminPageSection_2_6_15::$show_submit_button is deprecated in /var/www/ ... /wp-content/plugins/business-profile/lib/simple-admin-pages/classes/AdminPageSection.class.php on line 56

Deprecated: Creation of dynamic property sapAdminPageSection_2_6_15::$page is deprecated in /var/www/ ... /wp-content/plugins/business-profile/lib/simple-admin-pages/classes/AdminPageSection.class.php on line 56

Deprecated: Creation of dynamic property sapAdminPageSection_2_6_15::$tab is deprecated in /var/www/ ... /wp-content/plugins/business-profile/lib/simple-admin-pages/classes/AdminPageSection.class.php on line 56

Deprecated: Creation of dynamic property sapAdminPageSection_2_6_15::$callback is deprecated in /var/www/ ... /wp-content/plugins/business-profile/lib/simple-admin-pages/classes/AdminPageSection.class.php on line 56

Deprecated: Creation of dynamic property sapAdminPageSection_2_6_15::$page is deprecated in /var/www/ ... /wp-content/plugins/business-profile/lib/simple-admin-pages/classes/AdminPageSection.class.php on line 56

Deprecated: Creation of dynamic property sapAdminPageSection_2_6_15::$is_tab is deprecated in /var/www/ ... /wp-content/plugins/business-profile/lib/simple-admin-pages/classes/AdminPageSection.class.php on line 56

Deprecated: Creation of dynamic property sapAdminPageSection_2_6_15::$tutorial_yt_id is deprecated in /var/www/ ... /wp-content/plugins/business-profile/lib/simple-admin-pages/classes/AdminPageSection.class.php on line 56

the list then continues for more pages.

I suggest you either upgrade your code or implement the simple #[AllowDynamicProperties] attribute as suggested in this StackOverflow post.