Critical error on removal

Good morning
I have been attempting to delete the Participants Database plugin as it is no longer in use on the website. When I try, I get the message:

Deletion failed: There has been a critical error on this website.Learn more about troubleshooting WordPress.

I have tried it on my scratch site and get the same thing with a debug trace:

`[03-Nov-2022 09:18:39 UTC] participants-database plugin activated
[03-Nov-2022 09:18:40 UTC] Participants_Db::add_blank_field field added: “last_update_user”
[03-Nov-2022 09:19:21 UTC] participants-database plugin deactivated
[03-Nov-2022 09:19:40 UTC] PHP Fatal error: Uncaught Error: Class “PDb_Live_Notification” not found in C:\xampp\htdocs\develop\wp-content\plugins\participants-database\classes\PDb_Init.php:349
Stack trace:
#0 C:\xampp\htdocs\develop\wp-content\plugins\participants-database\classes\PDb_Init.php(53): PDb_Init->_uninstall()
#1 C:\xampp\htdocs\develop\wp-content\plugins\participants-database\classes\PDb_Init.php(95): PDb_Init->__construct(‘uninstall’)
#2 C:\xampp\htdocs\develop\wp-includes\class-wp-hook.php(307): PDb_Init::on_uninstall(”)
#3 C:\xampp\htdocs\develop\wp-includes\class-wp-hook.php(331): WP_Hook->apply_filters(”, Array)
#4 C:\xampp\htdocs\develop\wp-includes\plugin.php(476): WP_Hook->do_action(Array)
#5 C:\xampp\htdocs\develop\wp-admin\includes\plugin.php(1265): do_action(‘uninstall_parti…’)
#6 C:\xampp\htdocs\develop\wp-admin\includes\plugin.php(958): uninstall_plugin(‘participants-da…’)
#7 C:\xampp\htdocs\develop\wp-admin\includes\ajax-actions.php(4668): delete_plugins(Array)
#8 C:\xampp\htdocs\develop\wp-includes\class-wp-hook.php(307): wp_ajax_delete_plugin(”)
#9 C:\xampp\htdocs\develop\wp-includes\class-wp-hook.php(331): WP_Hook->apply_filters(”, Array)
#10 C:\xampp\htdocs\develop\wp-includes\plugin.php(476): WP_Hook->do_action(Array)
#11 C:\xampp\htdocs\develop\wp-admin\admin-ajax.php(187): do_action(‘wp_ajax_delete-…’)
#12 {main}
thrown in C:\xampp\htdocs\develop\wp-content\plugins\participants-database\classes\PDb_Init.php on line 349`

This is a relatively recent problem as we have successfully removed the plugin form the dev site.

I hope this trace will be sufficient to allow you to correct the error.

In the meantime, can you confirm whether the data has been removed from the database? If so, I will remove the plugin by deleting the files.

Thank you