Can't unzip files on vps. Maybe I'm doing something wrong?

Question

PHP

<?php

require_once('pclzip.lib.php');
$archive = new PclZip('11.zip');
if ($archive->extract() == 0) die("Error : ".$archive->errorInfo(true));
else echo('Ok!');

<?php
Gives error 500
PHP Warning: require_once(pclzip.lib.php): failed to open stream: No such file or directory in /home/admin/web/site.ru/public_html/1.php on line 3
PHP Fatal error: require_once(): Failed opening required 'pclzip.lib.php' (include_path='.:/usr/share/php') in /home/admin/web/site.ru/public_html/1.php on line 3
I don't understand what's wrong?

Answer 1

вам же написало

require_once(pclzip.lib.php): failed to open stream: No such file or directory

нет такого файла

Answer 2

Не может найти файл pclzip.lib.php