Why don't include and require work on the server?

Question

PHP

Wrote a script in PHP. Everything works fine on the local OpenServer. I threw it on the Beget host - an error occurs

require(/**/public_html/vendor/zendframework/zend-dom/src/Query.php): failed to open stream: No such file or directory in ...

Rights to folders 0755, files 0644

Answer 1

$_SERVER['DOCUMENT_ROOT'].'/vendor/...'