After the server PHP version of my Magento 2.2.1 website was upgraded from 7.2 to 7.3, the following error was prompted:
Warning: session_id(): Cannot change session id when session is active in /home/customer/www/mysite.com/public_html/vendor/magento/framework/Session/SessionManager.php on line 514
How to solve it？
Need to solve this problem