When accessing the the top of a POD as data the server issues status 500 #1261

When I issue a GET to the POD root, for example https://anvil1.inrupt.net/ with a content-type header set to application/turtle, I expect to get a ttl representation of the container. At the very least it should return

<> a solid:PodRoot ; solid:owner <profile/card#me>.

Ideally it should be the have the ldp:contains predicates as well so that a directory-tree can be developed for NSS.

Currently, it returns either the standard index.html when no content-type is set, or status 500 when the content-type is set to application/turtle.