Network/server failure.  Please check your Internet connection to undefined and choose Retry Network.  If you need to enter Offline Mode, choose Ignore Errors in this and subsequent dialogs.  If you believe this error is due to a bug in Evergreen and not network problems, please contact your helpdesk or friendly Evergreen admins, and give them this information:
method=open-ils.auth.authenticate.complete
params=[{"username":"admin","password":"07f163736951a53c6f21fe713d871694","type":"temp"}]
THROWN:
Network Failure: status = <unknown>
service=open-ils.auth&method=open-ils.auth.authenticate.complete&param=%7B%22username%22%3A%22admin%22%2C%22password%22%3A%2207f163736951a53c6f21fe713d871694%22%2C%22type%22%3A%22temp%22%7D
STATUS:
<unknown>