Исправить ошибки при кэшировании

Необходимо исправить ошибки при включении кэширующего плагина вида:

Warning: file(/public_html/wp-content/wp-cache-config.php): failed to open stream: No such file or directory in public_html/wp-content/plugins/wp-super-cache/wp-cache.php on line 2055

Warning: Invalid argument supplied for foreach() in /public_html/wp-content/plugins/wp-super-cache/wp-cache.php on line 2056

Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /public_html/wp-content/plugins/wp-super-cache/wp-cache.php:2055)...