After updating to 5.44 I get in my installation (wordpress) "Could not find valid value for id" when the thank you page is called. In Wordpress a "Basepage" is created, the registration also comes through and is entered in the database. Until the beginning of December this always worked. The following error message appears:
CRM_Core_Exception: Konnte keinen gültigen Wert für id finden. in ../httpdocs/wp-content/plugins/civicrm/civicrm/CRM/Event/StateMachine/Registration.php on line 27
Exception trace
# Function Location
0 CRM_Utils_Request::retrieve() ../httpdocs/wp-content/plugins/civicrm/civicrm/CRM/Event/StateMachine/Registration.php:27
1 CRM_Event_StateMachine_Registration->__construct() ../httpdocs/wp-content/plugins/civicrm/civicrm/CRM/Event/Controller/Registration.php:27
2 CRM_Event_Controller_Registration->__construct() ../httpdocs/wp-content/plugins/civicrm/civicrm/CRM/Core/Invoke.php:308
3 CRM_Core_Invoke::runItem() ../httpdocs/wp-content/plugins/civicrm/civicrm/CRM/Core/Invoke.php:69
4 CRM_Core_Invoke::_invoke() ../httpdocs/wp-content/plugins/civicrm/civicrm/CRM/Core/Invoke.php:36
5 CRM_Core_Invoke::invoke() ../httpdocs/wp-content/plugins/civicrm/civicrm.php:1169
6 CiviCRM_For_WordPress->invoke() ../httpdocs/wp-content/plugins/civicrm/includes/civicrm.basepage.php:366
7 CiviCRM_For_WordPress_Basepage->basepage_handler() ../httpdocs/wp-includes/class-wp-hook.php:303
8 WP_Hook->apply_filters() ../httpdocs/wp-includes/class-wp-hook.php:327
9 WP_Hook->do_action() ../httpdocs/wp-includes/plugin.php:518
10 do_action_ref_array() ../httpdocs/wp-includes/class-wp.php:763
11 WP->main() ../httpdocs/wp-includes/functions.php:1291
12 wp() ../httpdocs/wp-blog-header.php:16
13 require('/var/www/vhosts/…') ../httpdocs/index.php:17
14 {main}