output of error demo

gistfile1.txt

REPORT /owncloud/remote.php/caldav/calendars/mike/testcal1/ HTTP/1.1
Host: hermitest
Content-Length: 391
Accept: text/xml
User-Agent: Mozilla/5.0
Depth: 1
Content-Type: application/xml; charset="utf-8"
Authorization: Basic XXXXXXXXXXXXXXXXXXXXXXXXX

<?xml version='1.0' encoding='utf-8'?>
<C:calendar-query xmlns:C="urn:ietf:params:xml:ns:caldav" xmlns:D="DAV:">
   <D:prop>
      <C:calendar-data/>
   </D:prop>
   <C:filter>
      <C:comp-filter name="VCALENDAR">
         <C:comp-filter name="VEVENT">
            <C:time-range start="20160101T000000Z"/>
         </C:comp-filter>
      </C:comp-filter>
   </C:filter>
</C:calendar-query>
------------------------------------------
HTTP/1.1 207 Multi-Status
Date: Sun, 24 Jan 2016 14:02:16 GMT
Server: Apache/2.4.10 (Raspbian)
Set-Cookie: ock7p0c9urj4=r3arr0fcnpn6q8phqk18qm1dq0; path=/owncloud; HttpOnly
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Content-Security-Policy: default-src 'self'; script-src 'self' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; frame-src *; img-src * data: blob:; font-src 'self' data:; media-src *; connect-src *
X-XSS-Protection: 1; mode=block
X-Content-Type-Options: nosniff
X-Frame-Options: Sameorigin
X-Robots-Tag: none
Set-Cookie: ock7p0c9urj4=kfqivs6n650m8pdoii0kaq46p6; path=/owncloud; HttpOnly
X-Sabre-Version: 2.1.6
Vary: Brief,Prefer
Content-Length: 779
Content-Type: application/xml; charset=utf-8

<?xml version="1.0" encoding="utf-8"?>
<d:multistatus xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns" xmlns:cal="urn:ietf:params:xml:ns:caldav" xmlns:cs="http://calendarserver.org/ns/"><d:response><d:href>/owncloud/remote.php/caldav/calendars/mike/testcal1/owncloud-d9b7f412b71196286181d9e3c39568f1.ics</d:href><d:propstat><d:prop><cal:calendar-data>BEGIN:VCALENDAR
VERSION:2.0
PRODID:ownCloud Calendar
CALSCALE:GREGORIAN
BEGIN:VEVENT
UID:8c33fe3271
DTSTAMP:20160124T131755Z
CREATED:20160124T130428Z
LAST-MODIFIED:20160124T131755Z
SUMMARY:test
DTSTART;VALUE=DATE:20160107
DTEND;VALUE=DATE:20160108
LOCATION:
DESCRIPTION:
CATEGORIES:
CLASS:PUBLIC
END:VEVENT
END:VCALENDAR
</cal:calendar-data></d:prop><d:status>HTTP/1.1 200 OK</d:status></d:propstat></d:response></d:multistatus>

==========================================
REPORT /owncloud/remote.php/caldav/calendars/mike/testcal1/ HTTP/1.1
Host: hermitest
Content-Length: 496
Accept: text/xml
User-Agent: Mozilla/5.0
Depth: 1
Content-Type: application/xml; charset="utf-8"
Authorization: Basic XXXXXXXXXXXXXXXXXXXX

<?xml version='1.0' encoding='utf-8'?>
<C:calendar-query xmlns:C="urn:ietf:params:xml:ns:caldav" xmlns:D="DAV:">
  <D:prop>
     <C:calendar-data>
        <C:expand start="20160101T000000Z" end="20160130T000000Z"/>
     </C:calendar-data>
  </D:prop>
  <C:filter>
     <C:comp-filter name="VCALENDAR">
        <C:comp-filter name="VEVENT">
           <C:time-range start="20160101T000000Z" end="20160130T000000Z"/>
        </C:comp-filter>
     </C:comp-filter>
   </C:filter>
</C:calendar-query>
------------------------------------------
HTTP/1.1 500 Internal Server Error
Date: Sun, 24 Jan 2016 14:02:21 GMT
Server: Apache/2.4.10 (Raspbian)
Set-Cookie: ock7p0c9urj4=ivrd6nvq22ombr6hec3uugt6m1; path=/owncloud; HttpOnly
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Content-Security-Policy: default-src 'self'; script-src 'self' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; frame-src *; img-src * data: blob:; font-src 'self' data:; media-src *; connect-src *
X-XSS-Protection: 1; mode=block
X-Content-Type-Options: nosniff
X-Frame-Options: Sameorigin
X-Robots-Tag: none
Set-Cookie: ock7p0c9urj4=9nhmhoum2nqg7q2rc6se936mc1; path=/owncloud; HttpOnly
X-Sabre-Version: 2.1.6
Content-Length: 274
Connection: close
Content-Type: application/xml; charset=utf-8

<?xml version="1.0" encoding="utf-8"?>
<d:error xmlns:d="DAV:" xmlns:s="http://sabredav.org/ns">
  <s:sabredav-version>2.1.6</s:sabredav-version>
  <s:exception>Sabre\VObject\EofException</s:exception>
  <s:message>End of document reached prematurely</s:message>
</d:error>

see also https://gist.github.com/MStrecke/64bccbf447967da7337b and owncloud/calendar#1013