It reports you're missing the key "username" from your POST... so the first thing I'd check for is ... do you have a line like this in your login template page?:
<input type="text" name="username" value="" id="username"> -- You received this message because you are subscribed to the Google Groups "Django users" group. To view this discussion on the web visit https://groups.google.com/d/msg/django-users/-/gbQJMzYUsoUJ. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.

