What are common reasons for include errors when trying to include a file from a different directory?

Common reasons for include errors when trying to include a file from a different directory include incorrect file paths, missing file permissions, or the use of relative paths instead of absolute paths. To solve this issue, ensure that the file path is correct, check file permissions to ensure the file can be accessed, and use absolute paths to include files from different directories.

<?php
include_once('/path/to/your/file.php');
?>