PUT /public/.meta file made /public/ unreadable

Nobody has claimed this yet.

I've wanted to test the .meta file a bit out, as I didn't find specification on what HTTP Requests are allowed for it. I've made a PUT request with <xyz> "test" as body, it responded with 201 created, but now the folder is broken. When trying to access it, it responds with 500 Can't parse container.
Here is the directory: https://otman.solid.community/public/

The request and response

PUT /public/.meta HTTP/1.1
Host: otman.solid.community
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:67.0) Gecko/20100101 Firefox/67.0
Accept: */*
Accept-Language: en,en-US;q=0.7,de;q=0.3
Accept-Encoding: gzip, deflate, br
authorization: Bearer ...
Origin: https://otto-aa.github.io
DNT: 1
Connection: keep-alive
Referer: https://otto-aa.github.io/solid-filemanager/?url=https://otman.solid.community/public
Cookie: connect.sid=s%3A-KJ3IJZZQBVCXWGoa-EoaXKVN3fXH81V.T8alwcfT2VYWlvw0bq5il17fDgzNn%2FhNubbXmZF6aSk
Pragma: no-cache
Cache-Control: no-cache
Content-Length: 12

HTTP/1.1 201 Created
X-Powered-By: solid-server
Access-Control-Allow-Origin: https://otto-aa.github.io
Vary: Accept, Authorization, Origin
Access-Control-Allow-Credentials: true
Access-Control-Expose-Headers: Authorization, User, Location, Link, Vary, Last-Modified, ETag, Accept-Patch, Accept-Post, Updates-Via, Allow, WAC-Allow, Content-Length, WWW-Authenticate
Allow: OPTIONS, HEAD, GET, PATCH, POST, PUT, DELETE
Link: <.meta.acl>; rel="acl", <.meta.meta>; rel="describedBy", <http://www.w3.org/ns/ldp#Resource>; rel="type"
MS-Author-Via: SPARQL
Content-Type: text/plain; charset=utf-8
Content-Length: 7
ETag: W/"7-rM9AyJuqT6iOan/xHh+AW+7K/T8"
set-cookie: connect.sid=s%3A-KJ3IJZZQBVCXWGoa-EoaXKVN3fXH81V.T8alwcfT2VYWlvw0bq5il17fDgzNn%2FhNubbXmZF6aSk; Domain=.solid.community; Path=/; Expires=Sat, 25 May 2019 04:47:47 GMT; HttpOnly; Secure
Date: Fri, 24 May 2019 04:47:47 GMT
Connection: keep-alive

Start by reproducing the PUT request against https://otman.solid.community/public/.meta and compare the 201 response with the subsequent 500 Can't parse container response. Trace the server entry point that handles PUT requests for .meta resources and container parsing; done means a malformed .meta update no longer makes /public/ unreadable and the request outcome is handled consistently.

Written by the indexing model from the issue text.

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