Couldn't parse calendars - time Format issue?

[LeLieb]

Hello,
i'm using icsx for a week or so to subscribe to our family calendar. It worked at first but since yesterday it doesn't sync anymore and when I tried to delete the subscribtion and adding a new one, it didn't accept the link anymore. Can anyone read the following error code and recognize if it is a icsx5 problem or coming from the calendar link?
Thank you very much.

`Couldn't parse iCalendar

at.bitfire.ical4android.InvalidCalendarException: Couldn't parse iCalendar
at at.bitfire.ical4android.ICalendar$Companion.fromReader(ICalendar.kt:81)
at at.bitfire.ical4android.Event$Companion.eventsFromReader(Event.kt:81)
at at.bitfire.icsdroid.ui.AddCalendarValidationFragment$ValidationModel$initialize$downloader$1.onSuccess(AddCalendarValidationFragment.kt:115)
at at.bitfire.icsdroid.CalendarFetcher.fetchNetwork$icsx5_62_2_0_2_standardRelease(CalendarFetcher.kt:155)
at at.bitfire.icsdroid.CalendarFetcher.run(CalendarFetcher.kt:46)
at java.lang.Thread.run(Thread.java:920)
Caused by: net.fortuna.ical4j.data.ParserException: Error at line 158:Unparseable date: ":20220913T124054Z"
at net.fortuna.ical4j.data.CalendarParserImpl.parse(CalendarParserImpl.java:172)
at net.fortuna.ical4j.data.CalendarBuilder.build(CalendarBuilder.java:197)
at net.fortuna.ical4j.data.CalendarBuilder.build(CalendarBuilder.java:185)
at at.bitfire.ical4android.ICalendar$Companion.fromReader(ICalendar.kt:79)
... 5 more
Caused by: java.text.ParseException: Unparseable date: ":20220913T124054Z"
at java.text.DateFormat.parse(DateFormat.java:362)
at net.fortuna.ical4j.model.DateTime.setTime(DateTime.java:418)
at net.fortuna.ical4j.model.DateTime.(DateTime.java:349)
at net.fortuna.ical4j.model.property.DateProperty.setValue(DateProperty.java:139)
at net.fortuna.ical4j.model.property.Acknowledged.(Acknowledged.java:124)
at net.fortuna.ical4j.model.property.Acknowledged$Factory.createProperty(Acknowledged.java:158)
at net.fortuna.ical4j.model.PropertyBuilder.build(PropertyBuilder.java:76)
at net.fortuna.ical4j.data.DefaultContentHandler.endProperty(DefaultContentHandler.java:159)
at net.fortuna.ical4j.data.CalendarParserImpl$PropertyParser.parse(CalendarParserImpl.java:309)
at net.fortuna.ical4j.data.CalendarParserImpl$PropertyParser.access$1100(CalendarParserImpl.java:241)
at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:226)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.parse(CalendarParserImpl.java:446)
at net.fortuna.ical4j.data.CalendarParserImpl$ComponentParser.access$900(CalendarParserImpl.java:422)
at net.fortuna.ical4j.data.CalendarParserImpl$PropertyListParser.parse(CalendarParserImpl.java:224)
at net.fortuna.ical4j.data.CalendarParserImpl.parseCalendar(CalendarParserImpl.java:128)
at net.fortuna.ical4j.data.CalendarParserImpl.parseCalendarList(CalendarParserImpl.java:194)
at net.fortuna.ical4j.data.CalendarParserImpl.parse(CalendarParserImpl.java:163)
... 8 more
`

[rfc2822]

Hi,

Caused by: java.text.ParseException: Unparseable date: ":20220913T124054Z"
at java.text.DateFormat.parse(DateFormat.java:362)
at net.fortuna.ical4j.model.DateTime.setTime(DateTime.java:418)
at net.fortuna.ical4j.model.DateTime.(DateTime.java:349)
at net.fortuna.ical4j.model.property.DateProperty.setValue(DateProperty.java:139)
at net.fortuna.ical4j.model.property.Acknowledged.(Acknowledged.java:124)

Looks like there is an ACKNOWLEDGED alarm with two colons:

ACKNOWLEDGED::20220913T124054Z

This is an invalid iCalendar. Can you have a look at the ics file? There should by only one : (see https://www.rfc-editor.org/rfc/rfc9074#name-acknowledged-property).

[LeLieb]

You are absolutely right.
The file is quite small and it was the only ACKNOWLEDGED property yet, so it was easy to find. I just deleted the reminder function for the specific calendar entry in the host calendar and was able to subscribe to the calendar from my device again. If this happens again I will probably contact the email provider that hosts the calendar and therefore should be responsible for the ics file as I understand it.
Thanks again for helping me out so fast!

[gubrist]

I have been using ICSx for a year now for https://strautomator.com/feature/calendar - so I can display my Strava Sport activities in my Android calendar App.

And now I get the error message
" Couldn't parse iCalendar ".

What can I check and do to get more details on the reason?

[rfc2822]

There are validators like https://icalendar.org/validator.html. They don't find everything but you may have luck :)

[gubrist]

There are validators like https://icalendar.org/validator.html. They don't find everything but you may have luck :)

Thanks,

The calendar of https://strautomator.com/feature/calendar seems to be correct.

I assume the connection from https://strautomator.com is interrupted sometimes.