nextcloud/server · error · InvalidArgumentException

User <$userId> not found.

Error message

User <$userId> not found.

What it means

Symfony\Component\Console\Exception\InvalidArgumentException thrown by the occ dav:export-calendar command (apps/dav/lib/Command/ExportCalendar.php:61) when the user id passed as first argument does not exist in the user backend. The command refuses to continue before touching the calendar manager.

Solutions

1. List valid ids with occ user:list and re-run with the exact uid
2. If the user should come from LDAP/external backend, verify that backend is configured and reachable (occ user:lastseen, occ ldap:test-config)
3. Re-run the command with a uid that userExists() confirms

Example fix

# before
occ dav:export-calendar alic example-personal
# after
occ user:list | grep -i alic   # find exact id, e.g. 'alice'
occ dav:export-calendar alice personal

// programmatic callers: verify the uid first
if (!$userManager->userExists($uid)) {
    throw new RuntimeException("Unknown user $uid - run occ user:list");
}

try {
    $commandTester->execute(['uid' => $uid, 'uri' => $uri]);
} catch (\Symfony\Component\Console\Exception\InvalidArgumentException $e) {
    // message contains the offending argument; fix inputs and re-run
}

When it happens

Trigger: occ dav:export-calendar <uid> <calendar-uri> [--format=ical|jcal|xcal] [--location=...] where <uid> is not returned by IUserManager::userExists() - typo'd id, deleted user, or wrong user backend (e.g. user only exists in LDAP but LDAP is unreachable).

Common situations: Typo in the uid; running the command before provisioning the user; LDAP/external user backend temporarily unavailable so userExists() fails; copy-pasting examples that contain placeholder names.

Understand the failure class

Background: "User not found", "Invalid user", and "does not exist": what missing-user lookup errors mean across Rocket.Chat, LiteLLM, Phabricator, rustfs, and pnpm — this error's family across 10 libraries.

Related errors

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

AI-assisted analysis of nextcloud/server@ecdeb153ff (2026-08-17). Data as JSON: /api/errors/554deb92b43b857e. Report an issue: GitHub.

Appendix: source

Thrown at apps/dav/lib/Command/ExportCalendar.php:61

	#[\Override]
	protected function configure(): void {
		$this->setName('calendar:export')
			->setDescription('Export calendar data from supported calendars to disk or stdout')
			->addArgument('uid', InputArgument::REQUIRED, 'Id of system user')
			->addArgument('uri', InputArgument::REQUIRED, 'URI of calendar')
			->addOption('format', null, InputOption::VALUE_REQUIRED, 'Format of output (ical, jcal, xcal) defaults to ical', 'ical')
			->addOption('location', null, InputOption::VALUE_REQUIRED, 'Location of where to write the output. Defaults to stdout');
	}

	#[\Override]
	protected function execute(InputInterface $input, OutputInterface $output): int {
		$userId = $input->getArgument('uid');
		$calendarId = $input->getArgument('uri');
		$format = $input->getOption('format');
		$location = $input->getOption('location');

		if (!$this->userManager->userExists($userId)) {
			throw new InvalidArgumentException("User <$userId> not found.");
		}
		// retrieve calendar and evaluate if export is supported
		$calendars = $this->calendarManager->getCalendarsForPrincipal('principals/users/' . $userId, [$calendarId]);
		if ($calendars === []) {
			throw new InvalidArgumentException("Calendar <$calendarId> not found.");
		}
		$calendar = $calendars[0];
		if (!$calendar instanceof ICalendarExport) {
			throw new InvalidArgumentException("Calendar <$calendarId> does not support exporting");
		}
		// construct options object
		$options = new CalendarExportOptions();
		// evaluate if provided format is supported
		if (!in_array($format, ExportService::FORMATS, true)) {
			throw new InvalidArgumentException("Format <$format> is not valid.");
		}
		$options->setFormat($format);
		// evaluate if a valid location was given and is usable otherwise output to stdout

View on GitHub (pinned to ecdeb153ff)