No puedo accerder a mi dashboard

No puedo acceer ami sitio, eh intentado de todo, se renombraron las carpetas de los pluggins, se corrigieron errores, se desistalaron y se activaron de nuevo y no puedo.
me marca este error:

/**
* Check if any action has been registered for a hook.
*
* @package WordPress
* @subpackage Plugin
* @since 2.5
* @see has_filter() has_action() is an alias of has_filter().
*
* @param string $tag The name of the action hook.
* @param callback $function_to_check optional.
* @return mixed If $function_to_check is omitted, returns boolean for whether the hook has anything registered.
* When checking a specific function, the priority of that hook is returned, or false if the function is not attached.
* When using the $function_to_check argument, this function may return a non-boolean value that evaluates to false
* (e.g.) 0, so use the === operator for testing the return value.
*/

function has_action($tag, $function_to_check = false) { EL ERROR ME MARCA AQUí
return has_filter($tag, $function_to_check);
}