ATUM fatal error

Hello,

there is a mistake in the last update of atum plugin:

WordPress version 5.8.1
Thème actuel : Theme enfant (version 0.0.1)
Extension actuelle : ATUM Inventory Management for WooCommerce (version 1.9.4)
PHP version 7.4.23

Détails de l’erreur
======================
Une erreur de type E_COMPILE_ERROR a été causée dans la ligne 95 du fichier /var/www/vhosts/lecoboutique.fr/httpdocs/wp-content/plugins/atum-stock-manager-for-woocommerce/atum-stock-manager-for-woocommerce.php. Message d’erreur : require(): Failed opening required '/var/www/vhosts/lecoboutique.fr/httpdocs/wp-content/plugins/atum-stock-manager-for-woocommerce/vendor/autoload.php' (include_path='.:/opt/plesk/php/7.4/share/pear')

I had to deactivate the extension because my website was completely down :/
ATUM support, can you fix the issue please?

Many thanks in advance for your help.
Best regards,
Marie