Error log filling with errors from this plugin

This could be a long shot considering no support request has been answered in a very long time. But…can you tell me why this error is filling up the wp-admin error log?

[10-Sep-2026 19:01:16 UTC] PHP Warning: Undefined array key 0 in /home/site/public_html/wp-content/plugins/event-organiser/includes/event-organiser-cpt.php on line 372 [10-Sep-2026 19:01:16 UTC] PHP Warning: Attempt to read property “post_type” on null in /home/site/public_html/wp-content/plugins/event-organiser/includes/event-organiser-cpt.php on line 375