PHP User deprecated function (16384): Use Toolbox::stripTags()

[tech62]

Hello, little problem with the order plugin, when i click on generate file :

PHP User deprecated function (16384): Use Toolbox::stripTags(), Glpi\RichText\RichText::getSafeHtml(), Glpi\RichText\RichText::getEnhancedHtml() or Glpi\RichText\RichText::getTextFromHtml(). in /var/www/glpi/src/Toolbox.php at line 543
Uncaught Exception Error: Call to undefined method DB::fetch_array() in /var/www/glpi/files/_plugins/order/generate/custom.php at line 111

Line 111 in custom.php
while ($data=$DB->fetch_array($result))

Version : PHP 7.4 - Glpi 10.0.0 and order (last release)

Any idea to solve the problem ?
Thanks !