Release 19.4.2.1 WebSS Errors

Good Afternoon,

I have done some upgrades on test environments to 19.4.2.1. However, after a successful update of the system, I cannot login to WebSS. Errors include;

1.  A software upgrade is required. Please contact your system administrator (on client test server)

2. No error message coming but password screen remains highlighted as if i have not supplied password (my local test server)

In both cases, WebSS was working prior to the upgrade.

I would like to roll out the release since it contains some specific country mandatory tax changes but with these errors, i am skeptical

Thank you