nextcloud/server · error · Sabre\DAV\Exception

Principal not found

Error message

Principal not found

What it means

Error "Principal not found" thrown in nextcloud/server.

Source

Thrown at apps/dav/lib/Connector/Sabre/Principal.php:196

	/**
	 * Returns the list of groups a principal is a member of
	 *
	 * @param string $principal
	 * @param bool $needGroups
	 * @return array
	 * @throws Exception
	 */
	#[\Override]
	public function getGroupMembership($principal, $needGroups = false) {
		[$prefix, $name] = \Sabre\Uri\split($principal);

		if ($prefix !== $this->principalPrefix) {
			return [];
		}

		$user = $this->userManager->get($name);
		if (!$user) {
			throw new Exception('Principal not found');
		}

		$groups = [];

		if ($this->hasGroups || $needGroups) {
			$userGroups = $this->groupManager->getUserGroups($user);
			foreach ($userGroups as $userGroup) {
				if ($userGroup->hideFromCollaboration()) {
					continue;
				}
				$groups[] = 'principals/groups/' . urlencode($userGroup->getGID());
			}
		}

		$groups = array_unique(array_merge(
			$groups,
			$this->traitGetGroupMembership($principal, $needGroups)
		));

View on GitHub (pinned to ecdeb153ff)

When it happens

Trigger: Thrown at apps/dav/lib/Connector/Sabre/Principal.php:196 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of nextcloud/server@ecdeb153ff (2026-08-17). Data as JSON: /api/errors/495cf23473a7466b. Report an issue: GitHub.