[Flow] Suddenly I get: #1222268609: Access denied (0 denied, 0 granted, 1 abstained)

[Axel Wüstemann]

I don't know, where it comes from

#1222268609: Access denied (0 denied, 0 granted, 1 abstained)

Authentification worked properly, I did not change anythink by my mind...?

Could anybody explain the meaning? If authentification would fail, I 
would get an error message to display in my logon form...

Thank you for any hint.
Axel