Plugin Error: Site is Experiencing a Technical Issue

Hello, I have received two error notices today from WordPress about this plugin. Here is the error info:

WordPress version 6.8.2

Active theme: KLZR (version 1.0.0)

Current plugin: Timetable and Event Schedule (version 2.4.15)

PHP version 8.2.29

Error Details

=============

An error of type E_ERROR was caused in line 931 of the file /home/customer/www/klzr.org/public_html/wp-content/plugins/mp-timetable/classes/models/class-events.php. Error message: Uncaught TypeError: addslashes(): Argument #1 ($string) must be of type string, array given in /home/customer/www/klzr.org/public_html/wp-content/plugins/mp-timetable/classes/models/class-events.php:931

Stack trace:

#0 /home/customer/www/klzr.org/public_html/wp-content/plugins/mp-timetable/classes/models/class-events.php(931): addslashes(Array)

#1 /home/customer/www/klzr.org/public_html/wp-includes/class-wp-hook.php(324): mp_timetable\classes\models\Events->post_action_mptt_duplicate_event(20893)

#2 /home/customer/www/klzr.org/public_html/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters('', Array)

#3 /home/customer/www/klzr.org/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array)

#4 /home/customer/www/klzr.org/public_html/wp-admin/post.php(363): do_action('post_action_mpt...', 20893)

#5 {main}

thrown

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