Vendor/phpspreadsheet/phpoffice/phpspreadsheet/src/PhpSpreadsheet/Reader/Xls/ErrorCode.php
public static function lookup($code)
    {
        if (isset(self::$map[$code])) {
            return self::$map[$code];
        }

        return false;
    }
public static function lookup($code)
    {
        if (isset(self::$map[$code])) {
            return self::$map[$code];
        }

        return false;
    }
Map error code, e.g. '#N/A'.

@param int $code

@return bool|string