for some time this no longer works, the application crashes. however the error is regularly reported in the LOGS !!!
CORE (INVALID_LOGIN_CREDENTIAL)
CORE (NOT_VALID_EMAIL)
CORE (NO_SUCH_USER)
… And so on, no way to manage handled or unhandled workflow errors which worked perfectly until a few months ago !!!
Can you show us the workflows that you are having these errors on? Is someone trying to login when they are already logged in? Or are you not creating users and then trying to reference a user that hasn’t signed up? We need some more information to try to help. A few screenshots would be a great start. Hope we can help.