Widget Fatal Error in Appearance Section

How to solve this error?

Fatal error: Uncaught Error: Call to a member function get_cart() on null in /home/customer/www/yoga5d.com/public_html/wp-content/themes/bridge/framework/modules/woocommerce/widgets/woocommerce-dropdown-cart.php:45 Stack trace: #0 /home/customer/www/yoga5d.com/public_html/wp-includes/class-wp-widget.php(393): Woocommerce_Dropdown_Cart->widget(Array, Array) #1 /home/customer/www/yoga5d.com/public_html/wp-includes/widgets.php(1977): WP_Widget->display_callback(Array, Array) #2 /home/customer/www/yoga5d.com/public_html/wp-includes/rest-api/endpoints/class-wp-rest-widgets-controller.php(630): wp_render_widget(‘woocommerce-dro…’, ‘woocommerce_dro…’) #3 /home/customer/www/yoga5d.com/public_html/wp-includes/rest-api/endpoints/class-wp-rest-widgets-controller.php(122): WP_REST_Widgets_Controller->prepare_item_for_response(Array, Object(WP_REST_Request)) #4 /home/customer/www/yoga5d.com/public_html/wp-includes/rest-api/class-wp-rest-server.php(1140): WP_REST_Widgets_Controller->get_items(Object(WP_REST_Request)) #5 /home/custo in /home/customer/www/yoga5d.com/public_html/wp-content/themes/bridge/framework/modules/woocommerce/widgets/woocommerce-dropdown-cart.php on line 45
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