WordPress database error

With debugging turned on, I found this in my log. Is this an indication of a bug in the plugin? I x-ed out the IP adresss and removed the wordpress prefix. I think this is related to this plugin, since it mentions table <wordpress prefix>_bv_lp_requests.

WordPress database error Column 'username' cannot be null for query REPLACE INTO <wp_prefix>_bv_lp_requests (ip, status, time, category, username, request_id, message) VALUES ('x.x.x.x', '2', '1718749248', '7', NULL, '19919161846672083ff4050', 'Login Success') made by require('wp-blog-header.php'), require_once('wp-includes/template-loader.php'), do_action('template_redirect'), WP_Hook->do_action, WP_Hook->apply_filters, WC_AJAX::do_wc_ajax, do_action('wc_ajax_checkout'), WP_Hook->do_action, WP_Hook->apply_filters, WC_AJAX::checkout, WC_Checkout->process_checkout, WC_Checkout->process_customer, wc_create_new_customer, wp_insert_user, do_action('user_register'), WP_Hook->do_action, WP_Hook->apply_filters, {closure}, do_action('wp_login'), WP_Hook->do_action, WP_Hook->apply_filters, MCProtectLP_V556->loginSuccess, MCProtectLP_V556->log, MCProtectLogger_V556->log, MCProtectLoggerDB_V556->log, MCWPDb->replaceIntoBVTable

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