the migration with data-migration-tool from older Magento to Magento 2.0.4 is completed.
But after migration I get the error in frontend:
Unable to load theme by specified key: 'themename'
This is a very strange error because the theme 'themename' doesn't exist.
The database table theme doesn't show this mysterious theme. The same in adminarea Content -> Themes. And I choose another theme in Configuration -> General -> Design. And the theme doesn't exist in app/design folder.
So from where is this theme coming? Perhaps a theme from older Magento I migrated? If so...how can I delete this old theme and solve this error?
I deleted the caches and var folder, generated the static files, compiled di.xml, set permissions. Nothing helps.
Additional adminarea doesn't load any css.