Warning: require_once(/var/www/vhosts/understandingsociety.ac.uk/httpdocs/wp-content/plugins/wp-rocket/inc/Dependencies/ActionScheduler/classes/abstracts/ActionScheduler.php): Failed to open stream: No such file or directory in /var/www/vhosts/understandingsociety.ac.uk/httpdocs/wp-content/plugins/wp-rocket/inc/Dependencies/ActionScheduler/action-scheduler.php on line 54
Fatal error: Uncaught Error: Failed opening required '/var/www/vhosts/understandingsociety.ac.uk/httpdocs/wp-content/plugins/wp-rocket/inc/Dependencies/ActionScheduler/classes/abstracts/ActionScheduler.php' (include_path='.') in /var/www/vhosts/understandingsociety.ac.uk/httpdocs/wp-content/plugins/wp-rocket/inc/Dependencies/ActionScheduler/action-scheduler.php:54
Stack trace:
#0 /var/www/vhosts/understandingsociety.ac.uk/httpdocs/wp-content/plugins/wp-rocket/inc/Dependencies/ActionScheduler/classes/ActionScheduler_Versions.php(59): action_scheduler_initialize_3_dot_5_dot_4()
#1 /var/www/vhosts/understandingsociety.ac.uk/httpdocs/wp-includes/class-wp-hook.php(322): ActionScheduler_Versions::initialize_latest_version()
#2 /var/www/vhosts/understandingsociety.ac.uk/httpdocs/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters()
#3 /var/www/vhosts/understandingsociety.ac.uk/httpdocs/wp-includes/plugin.php(517): WP_Hook->do_action()
#4 /var/www/vhosts/understandingsociety.ac.uk/httpdocs/wp-settings.php(506): do_action()
#5 /var/www/vhosts/understandingsociety.ac.uk/httpdocs/wp-config.php(114): require_once('...')
#6 /var/www/vhosts/understandingsociety.ac.uk/httpdocs/wp-load.php(50): require_once('...')
#7 /var/www/vhosts/understandingsociety.ac.uk/httpdocs/wp-blog-header.php(13): require_once('...')
#8 /var/www/vhosts/understandingsociety.ac.uk/httpdocs/index.php(17): require('...')
#9 {main}
thrown in /var/www/vhosts/understandingsociety.ac.uk/httpdocs/wp-content/plugins/wp-rocket/inc/Dependencies/ActionScheduler/action-scheduler.php on line 54
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