Cannot subscribe or import to ics calendar

calendar
help

#1

Please help us by providing the following info. Before posting please also check the pinned "Known issues" threads and make sure that you're running the latest available version for your oC release: https://owncloud.org/changelog/

Steps to reproduce
1. Import ics file or insert ics url in subscription field
2.
3.

Expected behaviour
Calendar be added/subscribed

Actual behaviour
Import: Internal Server error 500
Subscription: note with fatal error in webcal-Proxy

Server configuration
Operating system: webhoster -> probably linux
Web server: webhoster
Database: MySQL
PHP version: 5.4
ownCloud version (see ownCloud admin page): 9.1.3
Updated from an older ownCloud or fresh install: fresh install
Special configuration (external storage, external authentication, reverse proxy, server-side-encryption): no

ownCloud log (data/owncloud.log)

nothing is logged

Integrity status for oC9+
Integrity failed because I added a person script for a manual OC update. But this script is not active.

[b]calendar sample[b]
The calendar works with Thunderbrid

BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//BRK//Pers Events//EN
METHOD:PUBLISH
X-LOTUS-CHARSET:UTF-8
X-WR-CALNAME:BRK
X-WR-CALDESC:BRK
CALSCALE:GREGORIAN
BEGIN:VTIMEZONE
TZID:Europe/Berlin
X-LIC-LOCATION:Europe/Berlin
BEGIN:DAYLIGHT
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
TZNAME:CEST
DTSTART:19700329T020000
RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
END:DAYLIGHT
BEGIN:STANDARD
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
TZNAME:CET
DTSTART:19701025T030000	
RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
UID:267@domain.de
SEQUENCE:0
STATUS:CONFIRMED
TRANSP:TRANSPARENT
DTSTART:20170113T180000
DTEND:20170113T193000
DTSTAMP:20170115T100348
SUMMARY:HvO Supervision
LOCATION: BRK  M?nchen
DESCRIPTION: Referent: Dr.med. S\nArt: HvO Supervision\nAnmerkung: 
CATEGORIES:myCategory
END:VEVENT