What potential issue is indicated by the error message "Failed opening required 'cl_user'"?

The error message "Failed opening required 'cl_user'" indicates that the PHP script is unable to locate and include the file 'cl_user' that it requires. This can be due to a misspelled file name, incorrect file path, or the file not being in the specified location. To solve this issue, ensure that the file 'cl_user.php' exists in the correct directory and that the file path specified in the require statement is accurate. 

<?php
require_once 'cl_user.php';
// Rest of the PHP code here
?>

Keywords

error message PHP require file path include path

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