Php related errors

Can someone decode this?

Fatal error: Uncaught Error: Call to a member function is_type() on null in /home3/hexagi3z/public_html/wp-content/themes/seese/inc/plugins/woocommerce/woo-config.php:564 Stack trace: #0 /home3/hexagi3z/public_html/wp-includes/class-wp-hook.php(309): seese_product_add_to_cart(‘Add to cart’) #1 /home3/hexagi3z/public_html/wp-includes/plugin.php(191): WP_Hook->apply_filters(‘Add to cart’, Array) #2 /home3/hexagi3z/public_html/wp-content/plugins/woocommerce/includes/class-wc-product-simple.php(62): apply_filters(‘woocommerce_pro…’, ‘Add to cart’, Object(WC_Product_Simple)) #3 /home3/hexagi3z/public_html/wp-content/plugins/woocommerce/packages/woocommerce-blocks/src/StoreApi/Schemas/V1/ProductSchema.php(477): WC_Product_Simple->add_to_cart_text() #4 [internal function]: Automattic\WooCommerce\StoreApi\Schemas\V1\ProductSchema->get_item_response(Object(WC_Product_Simple)) #5 /home3/hexagi3z/public_html/wp-content/plugins/woocommerce/packages/woocommerce-blocks/src/StoreApi/Schemas/V1/AbstractSchema.php(261): array_map(Array, in /home3/hexagi3z/public_html/wp-content/themes/seese/inc/plugins/woocommerce/woo-config.php on line 564