According to the Drupal security advisor (https://www.drupal.org/sa-contrib-2021-006), we upgrade the samlauth module to 8.x-3.1 . But after I deploy the update, the Acquia SSO return error with samlauth module.
Call to a member function getAccountName()
If you are still unable to logged in after module update, then kindly delete your account from your website and again login through SAML. It will resolve the login issue.