Marketpress PHP 7.1 updates required

Please resolve:

[27-Sep-2017 08:01:17 UTC] PHP Warning: array_keys() expects parameter 1 to be array, null given in /home/cheryblk/public_html/wp-content/plugins/wordpress-ecommerce/includes/common/class-mp-cart.php on line 445
[27-Sep-2017 08:01:17 UTC] PHP Warning: Invalid argument supplied for foreach() in /home/cheryblk/public_html/wp-content/plugins/wordpress-ecommerce/includes/common/class-mp-cart.php on line 439

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