Undefined array key

hello everyone,

My config :

Version of WordPress : 6.4.3 – Version of PHP/MySQL : 8.1.16 / 5.7.23

SiteOrigin Widgets Bundle (1.58.7)

In my file errorlog php, there is an recursive error (one error every about five minutes) :

[27-Feb-2024 07:23:33 UTC] PHP Warning: Undefined array key ??carousel_settings?? in /srv/data/web/vhosts/…/htdocs/wp-content/plugins/so-widgets-bundle/widgets/post-carousel/post-carousel.php on line 341

Someone have an idea ? Thanks !