problem with woocommerce orders

I installed your plugin but I get the error listed below; how can I solve it?

Fatal error: Uncaught DivisionByZeroError: Division by zero in /homepages/1/d947613672/htdocs/wp/wp-content/plugins/woo-coupon-usage/inc/functions/functions-calculate-order.php:1448 Stack trace: #0 /homepages/1/d947613672/htdocs/wp/wp-content/plugins/woo-coupon-usage/inc/functions/functions-calculate-order.php(645): wcusage_get_order_tax_percent() #1 /homepages/1/d947613672/htdocs/wp/wp-content/plugins/woo-coupon-usage/inc/functions/functions-calculate-order.php(333): wcusage_get_order_calculate_data() #2 /homepages/1/d947613672/htdocs/wp/wp-content/plugins/woo-coupon-usage/inc/admin/admin-orders-list.php(225): wcusage_calculate_order_data() #3 /homepages/1/d947613672/htdocs/wp/wp-content/plugins/woo-coupon-usage/inc/admin/admin-orders-list.php(112): wcusage_get_the_order_coupon_info() #4 /homepages/1/d947613672/htdocs/wp/wp-content/plugins/woo-coupon-usage/inc/admin/admin-orders-list.php(62): wcusage_output_affiliate_info_orders() #5 /homepages/1/d947613672/htdocs/wp/wp-includes/class-wp-hook.php(324): wcusage_add_order_column_content() #6 /homepages/1/d947613672/htdocs/wp/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #7 /homepages/1/d947613672/htdocs/wp/wp-includes/plugin.php(517): WP_Hook->do_action() #8 /homepages/1/d947613672/htdocs/wp/wp-content/plugins/woocommerce/src/Internal/Admin/Orders/ListTable.php(194): do_action() #9 /homepages/1/d947613672/htdocs/wp/wp-admin/includes/class-wp-list-table.php(1799): Automattic\WooCommerce\Internal\Admin\Orders\ListTable->column_default() #10 /homepages/1/d947613672/htdocs/wp/wp-content/plugins/woocommerce/src/Internal/Admin/Orders/ListTable.php(148): WP_List_Table->single_row_columns() #11 /homepages/1/d947613672/htdocs/wp/wp-admin/includes/class-wp-list-table.php(1724): Automattic\WooCommerce\Internal\Admin\Orders\ListTable->single_row() #12 /homepages/1/d947613672/htdocs/wp/wp-admin/includes/class-wp-list-table.php(1709): WP_List_Table->display_rows() #13 /homepages/1/d947613672/htdocs/wp/wp-admin/includes/class-wp-list-table.php(1636): WP_List_Table->display_rows_or_placeholder() #14 /homepages/1/d947613672/htdocs/wp/wp-content/plugins/woocommerce/src/Internal/Admin/Orders/ListTable.php(267): WP_List_Table->display() #15 /homepages/1/d947613672/htdocs/wp/wp-content/plugins/woocommerce/src/Internal/Admin/Orders/PageController.php(298): Automattic\WooCommerce\Internal\Admin\Orders\ListTable->display() #16 /homepages/1/d947613672/htdocs/wp/wp-includes/class-wp-hook.php(324): Automattic\WooCommerce\Internal\Admin\Orders\PageController->output() #17 /homepages/1/d947613672/htdocs/wp/wp-includes/class-wp-hook.php(348): WP_Hook->apply_filters() #18 /homepages/1/d947613672/htdocs/wp/wp-includes/plugin.php(517): WP_Hook->do_action() #19 /homepages/1/d947613672/htdocs/wp/wp-admin/admin.php(259): do_action() #20 {main} thrown in /homepages/1/d947613672/htdocs/wp/wp-content/plugins/woo-coupon-usage/inc/functions/functions-calculate-order.php on line 1448

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