Grid/Source/Source.php htmlentities(): Passing null to parameter #1 ($string) of type string is deprecated

[Skargne]

Hi,
In Symfony 5.4, there is a deprecation on in Grid/Grid.php line 579 :

Deprecated: htmlentities(): Passing null to parameter #1 ($string) of type string is deprecated

Here is a possible fix :

private function removeAccents($str)
    {
+        if(!$str instanceof string)
+        {
+            return $str;
+        }
        $entStr = htmlentities($str, ENT_NOQUOTES, 'UTF-8');
        $noaccentStr = preg_replace('#&([A-za-z])(?:acute|cedil|circ|grave|orn|ring|slash|th|tilde|uml);#', '\1', $entStr);

        return preg_replace('#&([A-za-z]{2})(?:lig);#', '\1', $noaccentStr);
    }