#98 Exception error messages are not parsed, so they are not translated

Testcase to check if messages on login are translated

1. Login with your user and add a wrong password
   • => fields are red and you get the following message
   • => “Nutzer oder Passwort ist nicht korrekt!”
2. Login with an unexisting user:
   • => fields are red and you get the following message
   • => “Nutzer und Kennwort passen nicht zueinander”
3. login with the right user and password
   • => successfully logged in