Fatal error: Uncaught Error: Call to a member function is_type() on null in /www/wwwroot/thaomocnamviet.com/wp-content/themes/food/functions.php:371 Stack trace: #0 /www/wwwroot/thaomocnamviet.com/wp-includes/class-wp-hook.php(326): custom_variable_add_to_cart_text() #1 /www/wwwroot/thaomocnamviet.com/wp-includes/plugin.php(205): WP_Hook->apply_filters() #2 /www/wwwroot/thaomocnamviet.com/wp-content/plugins/woocommerce/includes/class-wc-product-simple.php(62): apply_filters() #3 /www/wwwroot/thaomocnamviet.com/wp-content/plugins/woocommerce/src/StoreApi/Schemas/V1/ProductSchema.php(483): WC_Product_Simple->add_to_cart_text() #4 [internal function]: Automattic\WooCommerce\StoreApi\Schemas\V1\ProductSchema->get_item_response() #5 /www/wwwroot/thaomocnamviet.com/wp-content/plugins/woocommerce/src/Blocks/BlockTypes/AbstractProductGrid.php(113): array_map() #6 /www/wwwroot/thaomocnamviet.com/wp-content/plugins/woocommerce/src/Blocks/BlockTypes/AbstractBlock.php(88): Automattic\WooCommerce\Blocks\BlockTypes\AbstractProductGrid->render() #7 /www/wwwroot/thaomocnamviet.com/wp-includes/class-wp-block.php(586): Automattic\WooCommerce\Blocks\BlockTypes\AbstractBlock->render_callback() #8 /www/wwwroot/thaomocnamviet.com/wp-includes/class-wp-block.php(566): WP_Block->render() #9 /www/wwwroot/thaomocnamviet.com/wp-includes/class-wp-block.php(566): WP_Block->render() #10 /www/wwwroot/thaomocnamviet.com/wp-includes/blocks.php(2358): WP_Block->render() #11 /www/wwwroot/thaomocnamviet.com/wp-includes/blocks.php(2410): render_block() #12 /www/wwwroot/thaomocnamviet.com/wp-includes/class-wp-hook.php(324): do_blocks() #13 /www/wwwroot/thaomocnamviet.com/wp-includes/plugin.php(205): WP_Hook->apply_filters() #14 /www/wwwroot/thaomocnamviet.com/wp-includes/post-template.php(256): apply_filters() #15 /www/wwwroot/thaomocnamviet.com/wp-content/themes/flatsome/woocommerce/checkout/layouts/checkout.php(18): the_content() #16 /www/wwwroot/thaomocnamviet.com/wp-includes/template.php(812): require('...') #17 /www/wwwroot/thaomocnamviet.com/wp-content/plugins/woocommerce/includes/wc-core-functions.php(284): load_template() #18 /www/wwwroot/thaomocnamviet.com/wp-content/themes/flatsome/page-cart.php(9): wc_get_template_part() #19 /www/wwwroot/thaomocnamviet.com/wp-includes/template-loader.php(106): include('...') #20 /www/wwwroot/thaomocnamviet.com/wp-blog-header.php(19): require_once('...') #21 /www/wwwroot/thaomocnamviet.com/index.php(17): require('...') #22 {main} thrown in /www/wwwroot/thaomocnamviet.com/wp-content/themes/food/functions.php on line 371