Massive site slowness cause by SIB plugin: began 24-09-21
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Beginning Sep 24, 2021, we began experiencing massive site slowness. The SIB plugin is determined to be the cause: with plugin disabled site works fine. When plugin is enabled, cURL 28 error occurs and site is extremely slow and intermittently inaccessible. Newest version of plugin (updated Oct 4, 21) does not resolve. Excerpt from error log:
`[01-Oct-2021 09:21:02 UTC] WordPress database error MySQL server has gone away for query SELECT ‘user_added_date’ FROM INFORMATION_SCHEMA.COLUMNS WHERE table_name = ‘wp_sib_model_users’ AND column_name = ‘user_added_date’ made by require(‘wp-blog-header.php’), require_once(‘wp-load.php’), require_once(‘wp-config.php’), require_once(‘wp-settings.php’), include_once(‘/plugins/mailin/sendinblue.php’), do_action(‘sendinblue_init’), WP_Hook->do_action, WP_Hook->apply_filters, sendinblue_init, SIB_Manager->__construct, SIB_Model_Users::add_user_added_date_column
[01-Oct-2021 09:21:02 UTC] WordPress database error Duplicate column name ‘user_added_date’ for query ALTER TABLE wp_sib_model_users ADD user_added_date DATETIME NOT NULL made by require(‘wp-blog-header.php’), require_once(‘wp-load.php’), require_once(‘wp-config.php’), require_once(‘wp-settings.php’), include_once(‘/plugins/mailin/sendinblue.php’), do_action(‘sendinblue_init’), WP_Hook->do_action, WP_Hook->apply_filters, sendinblue_init, SIB_Manager->__construct, SIB_Model_Users::add_user_added_date_column`
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