Warning on cf7-connect.php on plugin updated

Hi,

as soon as I activate the cf7 skins module for contact 7, the required appearance of the form is there,

But an announcement message appears mentioning: Warning: Undefined array key 1 in [~]/wp-content/plugins/contact-form-7-skins/includes/cf7-connect.php on line 318

The module is up to date, the site is updated and the php version is correct at 8.0

can someone give me a clue please