PHP warnings on Plugin Activation

Hi,

I downloaded and installed the Cart66-Cloud plugin today on the wordpress site https://avn.org.au/ and received the following warnings across the top of all pages on the site:

Warning: include(/home3/shotinfo/public_html/wp-content/plugins/cart66-cloud/CC/Utility.php): failed to open stream: No such file or directory in /home3/shotinfo/public_html/wp-content/plugins/cart66-cloud/autoloader.php on line 19

Warning: include(): Failed opening ‘/home3/shotinfo/public_html/wp-content/plugins/cart66-cloud/CC/Utility.php’ for inclusion (include_path=’.:/opt/php54/lib/php’) in /home3/shotinfo/public_html/wp-content/plugins/cart66-cloud/autoloader.php on line 19

When I deactivated the plugin, the warnings disappeared. s this site is live, I am not going to keep the plugin activated.

Utility.php does not exist in the plugin installation, so I am not sure where to go with this one.

The site is running Magazine Flow theme v1.0.5.1

Thanks in advance for your help,
Shaa.

https://www.ads-software.com/plugins/cart66-cloud/