Errors after enabling plugin

Hi,

After I enabled the plugin, all archive/category-pages show the following error/warning messages:

Warning: Invalid argument supplied for foreach() in /www/wp-content/plugins/show-product-variations-for-woocommerce/public/class-wsv-public.php on line 208 Warning: array_merge(): Expected parameter 1 to be an array, null given in /www/wp-content/plugins/show-product-variations-for-woocommerce/public/class-wsv-public.php on line 213 Warning: array_diff(): Expected parameter 2 to be an array, null given in /www/wp-content/plugins/show-product-variations-for-woocommerce/public/class-wsv-public.php on line 230

I selected the following settings:
– Show Variations On Shop & Category As: ‘Single Product’
– Hide Parent Product of Variable Product: ‘Yes’

We currently have 2669 variable products (of 8027 total products).

Thanks for your response.