Upgrade to 1.8.10 Failed

After upgrading to Xibo (Docker) v1.8.10 from v1.8.9, I am no longer able to login as it states Username or Password incorrect but I have confirmed the credentials were correct before upgrade.

Also, after the failed upgrade I attempted to restore v1.8.9 using the instructions in https://xibo.org.uk/manual/en/upgrade_docker.html but the login page still shows 1.8.10 and I am still unable to login.