SQL Syntax Error - Events+

Hey folks,
Thanks in advance for your help. I'm getting the following error and users subscribed to this recurring event that's generating this error upon cancellation are receiving cancellation emails to the tune of 60-70/day.

Please advise how I can resolve this error. Thanks.

WordPress database error You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') /* From [community.citizensclimatelobby.org/wp-admin/post.php?post=15572&actio' at line 1 for query DELETE FROM wp_postmeta WHERE post_id IN () /* From [community.citizensclimatelobby.org/wp-admin/post.php?post=15572&action=delete&_wpnonce=f162a64a76] in [/nas/content/live/cclcommunity/wp-content/plugins/events-and-bookings/lib/class_eab_event_model.php:554] */ made by wp_delete_post, do_action('before_delete_post'), WP_Hook->do_action, WP_Hook->apply_filters, call_user_func_array, Eab_EventsHub->process_recurrent_deletion, Eab_EventModel->delete_recurring_instances, referer: https://community.citizensclimatelobby.org/wp-admin/edit.php?post_status=trash&post_type=incsub_event