Reduce verbosity of anonymous users trying to authenticate errors

Description

When an anonymous or non-existing user tries to log in, a very alerting warning can be logged, when the authentication mechanism in use tries to make use of the user's salt (which does not exist). This needlessly alarms administrators. The verbosity should be turned down a notch or two.

Environment

None
Fixed
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Assignee

Guus der Kinderen

Reporter

Guus der Kinderen