[2.0a1] UI Nodes page shows 'ascii' codec can't decode byte

Deployed daily xenial image from 2016-03-10 and maas 2.0.0 alpha1.
The UI's Nodes page shows:
    'ascii' codec can't decode byte 0xc3 in position 779: ordinal not in range(128)

||/ Name Version Architecture Description
+++-===============================-=============================-============-=============================================
ii maas 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS server all-in-one metapackage
ii maas-cli 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS command line API tool
un maas-cluster-controller <none> <none> (no description available)
ii maas-common 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS server common files
ii maas-dhcp 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS DHCP server
ii maas-dns 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS DNS server
ii maas-proxy 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS Caching Proxy
ii maas-rack-controller 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS server cluster controller
ii maas-region-controller 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS server complete region controller
ii maas-region-controller-min 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS Server minimum region controller
un python-django-maas <none> <none> (no description available)
un python-maas-client <none> <none> (no description available)
un python-maas-provisioningserver <none> <none> (no description available)
ii python3-django-maas 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS server Django web framework (Python 3)
ii python3-maas-client 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS python API client (Python 3)
ii python3-maas-provisioningserver 2.0.0~alpha1+bzr4736-0ubuntu1 all MAAS server provisioning libraries (Python 3)