<d:error>
	<s:exception>Sabre\DAVACL\Exception\NeedPrivileges</s:exception>
	<s:message>
		User did not have the required privileges ({DAV:}read) for path "principals/john"
	</s:message>
	<s:sabredav-version>1.8.12</s:sabredav-version>
	<d:need-privileges>
		<d:resource>
			<d:href>/cloud/remote.php/caldav/principals/john</d:href>
			<d:privilege>
				<d:read/>
			</d:privilege>
		</d:resource>
	</d:need-privileges>
</d:error>