Ошибка в class-wp-hook.php на другом хостинге

При переносе сайта на другой хостинг выдает:
Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘astra_single_post_navigation_markup’ not found or invalid function name in /var/www/u1100098/data/www/dev.valdo-bar.ru/wp-includes/class-wp-hook.php on line 303

Код из файла (строка выделена):

`/**
* Calls the callback functions that have been added to a filter hook.
*
* @since 4.7.0
*
* @param mixed $value The value to filter.
* @param array $args Additional parameters to pass to the callback functions.
* This array is expected to include $value at index 0.
* @return mixed The filtered value after all hooked functions are applied to it.
*/
public function apply_filters( $value, $args ) {
if ( ! $this->callbacks ) {
return $value;
}

$nesting_level = $this->nesting_level++;

$this->iterations[ $nesting_level ] = array_keys( $this->callbacks );
$num_args = count( $args );

do {
$this->current_priority[ $nesting_level ] = current( $this->iterations[ $nesting_level ] );
$priority = $this->current_priority[ $nesting_level ];

foreach ( $this->callbacks[ $priority ] as $the_ ) {
if ( ! $this->doing_action ) {
$args[0] = $value;
}

// Avoid the array_slice() if possible.
if ( 0 == $the_[‘accepted_args’] ) {
$value = call_user_func( $the_[‘function’] );
} elseif ( $the_[‘accepted_args’] >= $num_args ) {
$value = call_user_func_array( $the_[‘function’], $args );
} else {
$value = call_user_func_array( $the_[‘function’], array_slice( $args, 0, (int) $the_[‘accepted_args’] ) );
}
}
} while ( false !== next( $this->iterations[ $nesting_level ] ) );

unset( $this->iterations[ $nesting_level ] );
unset( $this->current_priority[ $nesting_level ] );

$this->nesting_level—;

return $value;
}

Страница, с которой нужна помощь: [войдите, чтобы увидеть ссылку]