Another Fatal Error

Similar to other errors (I did just post this on the FB page, also. Not sure which is the best way to reach you):

Fatal error: Uncaught TypeError: count(): Argument #1 ($var) must be of type Countable|array, null given in /var/www/graceforsuffolk/wp-content/plugins/sermon-manager-for-wordpress/includes/class-sm-dates-wp.php:232 Stack trace: #0 /var/www/graceforsuffolk/wp-content/plugins/sermon-manager-for-wordpress/includes/class-sm-dates-wp.php(201): SM_Dates_WP::update_term_dates() #1 /var/www/graceforsuffolk/wp-includes/class-wp-hook.php(292): SM_Dates_WP::save_terms_dates() #2 /var/www/graceforsuffolk/wp-includes/class-wp-hook.php(316): WP_Hook->apply_filters() #3 /var/www/graceforsuffolk/wp-includes/plugin.php(484): WP_Hook->do_action() #4 /var/www/graceforsuffolk/wp-includes/post.php(4373): do_action() #5 /var/www/graceforsuffolk/wp-includes/post.php(4486): wp_insert_post() #6 /var/www/graceforsuffolk/wp-admin/includes/post.php(419): wp_update_post() #7 /var/www/graceforsuffolk/wp-admin/post.php(227): edit_post() #8 {main} thrown in /var/www/graceforsuffolk/wp-content/plugins/sermon-manager-for-wordpress/includes/class-sm-dates-wp.php on line 232