Paynow woocommerce plugin **Warning** : Illegal string offset 'Status'

[netvis]

Warning : Illegal string offset ‘Status’ in …/wp-content/plugins/Paynow-for-WooCommerce-master/paynow-for-woocommerce.php on line 108

I am getting the above error after enabling the paynow woocommerce plugin.
What could be causing it?