[02-Sep-2020 13:45:50 Europe/London] Request URI: /index.php?main_page=payer_auth_verifier, IP address:
#1 session_id() called at [/home/site/public_html/includes/modules/pages/payer_auth_verifier/header_php.php:55]
#2 require(/home/site/public_html/includes/modules/pages/payer_auth_verifier/header_php.php) called at [/home/site/public_html/index.php:36]
--> PHP Warning: session_id(): Cannot change session id when session is active in /home/site/public_html/includes/modules/pages/payer_auth_verifier/header_php.php on line 55.

1.5.6c PHP Version: 7.3.21

I've verified the bug myself and also verified that the bug doesn't happen 100% of the time.

When clicking the final stage to confirm, the verifier page fails with a session timeout error.

When attempting payment via paypaldp I get the error.