search on latin characters throws error

[Granaat]

$dom = new Document($url, true);
$dom->first("#panel-spécifications");

throws:

Fatal error: Uncaught DiDom\Exceptions\InvalidSelectorException: Invalid selector "écifications". in ...\vendor\imangazaliev\didom\src\DiDom\Query.php:463 Stack trace: #0 ...\vendor\imangazaliev\didom\src\DiDom\Query.php(115): DiDom\Query::getSegments('\xC3\xA9cifications') #1 ...\vendor\imangazaliev\didom\src\DiDom\Query.php(74): DiDom\Query::parseAndConvertSelector('\xC3\xA9cifications', '//') #2 ...\vendor\imangazaliev\didom\src\DiDom\Query.php(53): DiDom\Query::cssToXpath('#rlta-panel-sp\xC3...') #3 ...\vendor\imangazaliev\didom\src\DiDom\Document.php(449): DiDom\Query::compile('#rlta-panel-sp\xC3...', 'CSS') #4 ...\vendor\imangazaliev\didom\src\DiDom\Query.php on line 463

Even when htmlencoding the accents.