Error Log woordfence blocking IP?

I can see in the error log of my page that since end of the July there is an error 28 from mysql request “SHOW FULL COLUMNS FROM wp_wfblocks7 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/wordfence/wordfence.php’), wordfence::install_actions”.

It seems like a Wordfence is blocking those requests or IP adresses which try to create them. Is that normal? Errors happen alomost every day with a day or two break around 20:00 UTC/23:00 UTC

The very first error starts with: Lost connection to MySQL server during query WordPress database [..] INSERT INTO wp_options (option_name, option_value, autoload) VALUES (‘_transient_doing_cron’, ‘there were some numbers here’, ‘yes’) ON DUPLICATE KEY UPDATE option_name = VALUES(option_name), option_value = VALUES(option_value), autoload = VALUES(autoload) wysłanego przez require(‘wp-blog-header.php’), require_once(‘wp-load.php’), require_once(‘wp-config.php’), require_once(‘wp-settings.php’), do_action(‘init’), WP_Hook->do_action, WP_Hook->apply_filters, wp_cron, spawn_cron, set_transient, add_option

Kind regards