/home/intiyveg/public_html/wp-content/plugins/woocommerce/includes/class-wc-prod

/home/intiyveg/public_html/wp-content/plugins/woocommerce/includes/class-wc-product-attribute.php on line 59

I am getting this error in product data while trying to make any changes in product attributes, from most of the products with variations add to cart option disappeared, while on some while trying to add to cart , error messages is showing , this product not available , please choose other product , while selecting other in the category same issue there, Main image from single product page is also disappearing from some of the products pages , all themes and plugins are updated as per requirement, i tested it by deactivating all plugins and using default theme, still same issue