Make sure login do not throw exception for unknown users.
Make sure login do not throw exception for unknown users.

kkampardi/Plinth,harry-7/Plinth,kkampardi/Plinth,freedomboxtwh/Plinth,freedomboxtwh/Plinth,jvalleroy/plinth-debian,freedomboxtwh/Plinth,vignanl/Plinth,vignanl/Plinth,jvalleroy/plinth-debian,freedomboxtwh/Plinth,jvalleroy/plinth-debian,freedomboxtwh/Plinth,harry-7/Plinth,vignanl/Plinth,jvalleroy/plinth-debian,jvalleroy/plinth-debian,kkampardi/Plinth,kkampardi/Plinth,vignanl/Plinth,harry-7/Plinth,harry-7/Plinth,harry-7/Plinth,vignanl/Plinth,kkampardi/Plinth