[Bug]: The supplied iCalendar datetime value is incorrect: master about server

[xaviercm63]

Same problem here when "CalDavSynchronizer" try to delete some calendar entry.

• Nextcloud 29.0.1
• Mysql 8.0.36
• Apache 2.4.52
• PHP 8.1.2

{
  "reqId": "tODjyVQw6O2eGtD0Tkl0",
  "level": 3,
  "time": "2024-05-28T13:16:11+00:00",
  "remoteAddr": "1.2.3.4",
  "user": "Bob",
  "app": "webdav",
  "method": "DELETE",
  "url": "/remote.php/dav/calendars/Bob/personal/sabredav-b5bf81f5-6fa5-41e2-8fc3-9717350b746b.ics",
  "message": "The supplied iCalendar datetime value is incorrect: master",
  "userAgent": "CalDavSynchronizer/4.4",
  "version": "29.0.1.1",
  "exception": {
    "Exception": "Sabre\\VObject\\InvalidDataException",
    "Message": "The supplied iCalendar datetime value is incorrect: master",
    "Code": 0,
    "Trace": [
      {
        "file": "/nextcloud/3rdparty/sabre/vobject/lib/DateTimeParser.php",
        "line": 205,
        "function": "parseDateTime",
        "class": "Sabre\\VObject\\DateTimeParser",
        "type": "::"
      },
      {
        "file": "/nextcloud/3rdparty/sabre/vobject/lib/ITip/Broker.php",
        "line": 737,
        "function": "parse",
        "class": "Sabre\\VObject\\DateTimeParser",
        "type": "::"
      },
      {
        "file": "/nextcloud/3rdparty/sabre/vobject/lib/ITip/Broker.php",
        "line": 251,
        "function": "parseEventForAttendee",
        "class": "Sabre\\VObject\\ITip\\Broker",
        "type": "->"
      },
      {
        "file": "/nextcloud/3rdparty/sabre/dav/lib/CalDAV/Schedule/Plugin.php",
        "line": 393,
        "function": "parseEvent",
        "class": "Sabre\\VObject\\ITip\\Broker",
        "type": "->"
      },
      {
        "file": "/nextcloud/apps/dav/lib/CalDAV/Schedule/Plugin.php",
        "line": 187,
        "function": "beforeUnbind",
        "class": "Sabre\\CalDAV\\Schedule\\Plugin",
        "type": "->",
        "args": [
          "*** sensitive parameters replaced ***"
        ]
      },
      {
        "file": "/nextcloud/3rdparty/sabre/event/lib/WildcardEmitterTrait.php",
        "line": 89,
        "function": "beforeUnbind",
        "class": "OCA\\DAV\\CalDAV\\Schedule\\Plugin",
        "type": "->",
        "args": [
          "*** sensitive parameters replaced ***"
        ]
      },
      {
        "file": "/nextcloud/3rdparty/sabre/dav/lib/DAV/CorePlugin.php",
        "line": 278,
        "function": "emit",
        "class": "Sabre\\DAV\\Server",
        "type": "->"
      },
      {
        "file": "/nextcloud/3rdparty/sabre/event/lib/WildcardEmitterTrait.php",
        "line": 89,
        "function": "httpDelete",
        "class": "Sabre\\DAV\\CorePlugin",
        "type": "->"
      },
      {
        "file": "/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php",
        "line": 472,
        "function": "emit",
        "class": "Sabre\\DAV\\Server",
        "type": "->"
      },
      {
        "file": "/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php",
        "line": 253,
        "function": "invokeMethod",
        "class": "Sabre\\DAV\\Server",
        "type": "->"
      },
      {
        "file": "/nextcloud/3rdparty/sabre/dav/lib/DAV/Server.php",
        "line": 321,
        "function": "start",
        "class": "Sabre\\DAV\\Server",
        "type": "->"
      },
      {
        "file": "/nextcloud/apps/dav/lib/Server.php",
        "line": 374,
        "function": "exec",
        "class": "Sabre\\DAV\\Server",
        "type": "->"
      },
      {
        "file": "/nextcloud/apps/dav/appinfo/v2/remote.php",
        "line": 35,
        "function": "exec",
        "class": "OCA\\DAV\\Server",
        "type": "->"
      },
      {
        "file": "/nextcloud/remote.php",
        "line": 172,
        "args": [
          "/nextcloud/apps/dav/appinfo/v2/remote.php"
        ],
        "function": "require_once"
      }
    ],
    "File": "/nextcloud/3rdparty/sabre/vobject/lib/DateTimeParser.php",
    "Line": 40,
    "message": "The supplied iCalendar datetime value is incorrect: master",
    "exception": {},
    "CustomMessage": "The supplied iCalendar datetime value is incorrect: master"
  }
}