Error due to special characters

[patrickbuff]

Since one week I become this error in my ICS-Parser.

Fatal error: Uncaught Exception: DateTime::__construct(): Failed to parse time string (20170423T120000DESCRIPTION:Paulus mit Beat Müller\nKalender:Sonntagmorgen - [ws][predigt]Beat Müller / [bethel] / [notizen]Sunnestrahle, Rägetröpfli, XfürKids,X4Teens[/notizen][/ws]) at position 15 (D): The timezone could not be found in the database in /home/httpd/vhosts/chrischonazuerich.ch/httpdocs/wp/wp-content/plugins/calendar-sync/ICal.php:494 Stack trace: #0 /home/httpd/vhosts/chrischonazuerich.ch/httpdocs/wp/wp-content/plugins/calendar-sync/ICal.php(494): DateTime->__construct('20170423T120000...') #1 /home/httpd/vhosts/chrischonazuerich.ch/httpdocs/wp/wp-content/plugins/calendar-sync/ICal.php(1112): ICal\ICal->iCalDateWithTimeZone(Array, 'DTEND') #2 /home/httpd/vhosts/chrischonazuerich.ch/httpdocs/wp/wp-content/plugins/calendar-sync/ICal.php(259): ICal\ICal->processDateConversions() #3 /home/httpd/vhosts/chrischonazuerich.ch/httpdocs/wp/wp-content/plugins/calendar-sync/ICal.php(137): ICal\ICal->initLines(Array) #4 /home/ht in /home/httpd/vhosts/chrischonazuerich.ch/httpdocs/wp/wp-content/plugins/calendar-sync/ICal.php on line 494

I have attached the ICS-File on which i refer.
On the server works PHP 7.0.11 with the following settings: http://chrischonazuerich.ch/srv-info/
I have also downloaded the newest version of the ICS-Parser from https://github.com/u01jmg3/ics-parser.

Do you see the point of error?
Thank you for your help and your answer.

ChurchTools.ics.zip

[u01jmg3]

• There are 2 problems with the iCal you are trying to parse:
  1. Event descriptions contain special characters - specifically these events:
     • Paulus mit Beat Müller...
     • Eine Veranstaltung des...
  2. There is an event with double quotes (" ") in the description spanning multiple lines which the parser fundamentally cannot understand:
     • ... mit Vreni Theobald zum Thema...
• These errors lie with the data and not the parser