I am updating Php version of wordpress website to php 8.0. I am getting fatal errors of undefined variables. PHP Fatal error: Uncaught Error: Undefined constant "monthly_orders" in /www/…./public/wp-content/themes/…../functions.php:1263 Here is the part of code. function wc_new_monthly_orders_column($columns) { $new_columns = array(); foreach ($columns as $column_name => $column_info) { $new_columns[$column_name] = $column_info; if (‘orders’ === $column_name)… Read More PHP Fatal error: Uncaught Error: Undefined constant "monthly_orders" – in functions.php WordPress php 8 update