nextcloud/server · error · InvalidArgumentException

Calendar <$calendarId> not found

Error message

Calendar <$calendarId> not found

What it means

InvalidArgumentException thrown by occ dav:import-calendar (apps/dav/lib/Command/ImportCalendar.php:85) when getCalendarsForPrincipal('principals/users/<uid>', [<uri>]) returns no calendar - the import target URI does not exist for that principal.

Source

Thrown at apps/dav/lib/Command/ImportCalendar.php:85

		$userId = $input->getArgument('uid');
		$calendarId = $input->getArgument('uri');
		$location = $input->getArgument('location');
		$format = $input->getOption('format');
		$errors = is_numeric($input->getOption('errors')) ? (int)$input->getOption('errors') : null;
		$validation = is_numeric($input->getOption('validation')) ? (int)$input->getOption('validation') : null;
		$supersede = $input->getOption('supersede');
		$showCreated = $input->getOption('show-created');
		$showUpdated = $input->getOption('show-updated');
		$showSkipped = $input->getOption('show-skipped');
		$showErrors = $input->getOption('show-errors');

		if (!$this->userManager->userExists($userId)) {
			throw new InvalidArgumentException("User <$userId> not found.");
		}
		// retrieve calendar and evaluate if import is supported and writeable
		$calendars = $this->calendarManager->getCalendarsForPrincipal('principals/users/' . $userId, [$calendarId]);
		if ($calendars === []) {
			throw new InvalidArgumentException("Calendar <$calendarId> not found");
		}
		$calendar = $calendars[0];
		if (!$calendar instanceof CalendarImpl) {
			throw new InvalidArgumentException("Calendar <$calendarId> doesn't support this function");
		}
		if (!$calendar->isWritable()) {
			throw new InvalidArgumentException("Calendar <$calendarId> is not writeable");
		}
		if ($calendar->isDeleted()) {
			throw new InvalidArgumentException("Calendar <$calendarId> is deleted");
		}
		// construct options object
		$options = new CalendarImportOptions();
		$options->setSupersede($supersede);
		if ($errors !== null) {
			$options->setErrors($errors);
		}
		if ($validation !== null) {

View on GitHub (pinned to ecdeb153ff)

Solutions

1. PROPFIND /remote.php/dav/calendars/alice/ (or query oc_calendars.uri) to get the exact URI
2. Create the target first with a CalDAV client or use an existing calendar URI
3. Re-run with the case-sensitive URI

Example fix

# before
occ dav:import-calendar alice Personal calendar.ics
# after  (uri is lowercase 'personal')
occ dav:import-calendar alice personal calendar.ics

$uris = array_map(fn ($c) => $c->getUri(),
    $calendarManager->getCalendarsForPrincipal('principals/users/' . $uid));
in_array($uri, $uris, true) || throw new RuntimeException('Unknown calendar uri');

When it happens

Trigger: occ dav:import-calendar alice <uri> calendar.ics where <uri> is not a calendar of alice (typo, wrong case, other principal, or app calendar registered under a different id).

Common situations: Using display names instead of URIs; importing into a calendar that was deleted or belongs to a shared/delegated principal; case mismatches.

Related errors

• Calendar <$calendarId> not found.
• User <$userId> not found.
• User <$userId> not found.
• Calendar <$calendarId> doesn't support this function
• Calendar <$calendarId> is not writeable

AI-assisted analysis of nextcloud/server@ecdeb153ff (2026-08-17). Data as JSON: /api/errors/8a5fb1195a54c1d1. Report an issue: GitHub.