Error restoring connection to database
This means that contact with the database server on localhost has been lost. This may mean that your host database server is down.
Are you sure the database server is running?
Are you sure the database server isn’t overloaded?
With this message below from the Query Monitor:
This post was triggered by the-events-calendar.
Call stack:
wp_die()
wp-includes/functions.php:5314
dead_db()
wp-includes/class-wpdb.php:2009
TEC\E\C\V\S\Abstract_Custom_Field->update()
wp-content/plugins/the-events-calendar/src/Events/Custom_Tables/V1/Schema_Builder/Schema_Builder.php:268
TEC\E\C\V\S\Schema_Builder->up()
wp-content/plugins/the-events-calendar/src/Events/Custom_Tables/V1/Activation.php:106
TEC\E\C\V\Activation::init()
wp-content/plugins/events-calendar-pro/src/Events_Pro/Custom_Tables/V1/Activation.php:128
TEC\E\C\V\Activation::init()
wp-includes/class-wp-hook.php:308
do_action(‘init’)
wp-settings.php:617