CBPArgumentNullException :: __construct: Bitrix method

      
<?php 
//  CBPArgumentNullException :: __construct()
//  /dist/bitrix/modules/bizproc/classes/general/exception.php:24

    public function __construct($paramName, $message = "")
    {
        if (strlen($message) <= 0)
            $message = str_replace("#PARAM#", htmlspecialcharsbx($paramName), GetMessage("BPCGERR_NULL_ARG"));

        parent::__construct($message, $paramName);

        $this->code = "10002";
    }