error after creating warehouse

hellow im trying to use the plugin with no luck, i got this error after creating warehouse

Fatal error: Uncaught Error: Using $this when not in object context in /home/cervall/public_html/wp-content/plugins/warehouse-popups-woocommerce/public/class-warehouse-popups-woocommerce-public.php:982 Stack trace: #0 /home/cervall/public_html/wp-includes/class-wp-hook.php(287): Warehouse_Popups_Woocommerce_Public::wh_popups_override_price(‘48174’, Object(WC_Product_Variation)) #1 /home/cervall/public_html/wp-includes/plugin.php(212): WP_Hook->apply_filters(‘48174’, Array) #2 /home/cervall/public_html/wp-content/plugins/woocommerce/includes/abstracts/abstract-wc-data.php(751): apply_filters(‘woocommerce_pro…’, ‘48174’, Object(WC_Product_Variation)) #3 /home/cervall/public_html/wp-content/plugins/woocommerce/includes/abstracts/abstract-wc-product.php(267): WC_Data->get_prop(‘price’, ‘view’) #4 /home/cervall/public_html/wp-content/plugins/woocommerce/includes/class-wc-product-variation.php(572): WC_Product->get_price() #5 /home/cervall/public_html/wp-content/plugins/woocommerce/includes/class-wc-product-variation.php(550) in /home/cervall/public_html/wp-content/plugins/warehouse-popups-woocommerce/public/class-warehouse-popups-woocommerce-public.php on line 982