OCP\\Share Sharing backend for principals not found

[moba]

I am constantly seeing these error message in the log (Owncloud 9):

{"reqId":"VwTbQX8AAAEAAAXofKAAAAAV","remoteAddr":"xxxx","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2016-04-06T09:47:45+00:00"}
{"reqId":"VwTbQX8AAAEAAAXeRS4AAAAL","remoteAddr":"xxxx","app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2016-04-06T09:47:45+00:00"}
{"reqId":"VwTbQX8AAAEAAAXU9pIAAAAB","remoteAddr":"xxxx,"app":"OCP\\Share","message":"Sharing backend for principals not found","level":3,"time":"2016-04-06T09:47:45+00:00"}

I am trying to use the calDav calendar, but the login is not accepted. Maybe this is related.

[nickvergessen]

@DeepDiver1975 @owncloud/sharing
Code in question:

core/lib/private/share/share.php

Lines 1536 to 1539 in c353d51

	$message = 'Sharing backend for %s not found';
	$message_t = $l->t('Sharing backend for %s not found', array($itemType));
	\OCP\Util::writeLog('OCP\Share', sprintf($message, $itemType), \OCP\Util::ERROR);
	throw new \Exception($message_t);

[moba]

Problem seems to have disappeared in 9.0.1. Thanks!

[trourance]

After updating from 9.0.1 to 9.0.2, this message starts to appear in the logs.

Error OCP\Share Sharing backend for principals not found 2016-05-25T13:02:09+02:00
Error OCP\Share Sharing backend for principals not found 2016-05-25T13:02:09+02:00
Error OCP\Share Sharing backend for principals not found 2016-05-25T13:02:08+02:00
Error OCP\Share Sharing backend for principals not found 2016-05-25T13:02:08+02:00
Error OCP\Share Sharing backend for principals not found 2016-05-25T13:02:08+02:00
Error OCP\Share Sharing backend for principals not found 2016-05-25T13:02:08+02:00

And in addition, that one.

Error OCP\Share Sharing backend for calendar not found 2016-05-25T13:01:07+02:00

[reneneee]

I'm seeing this on 9.0.3 as well.

[paraqles]

I'm also seeing this on version 9.1.1

Configuration with users and groups in LDAP.

[plastikschnitzer]

I also see this on version 9.1.2

[Pazu]

I also see this using 9.1.2. @nickvergessen, could you reopen this?

[flolerchi]

I also see this on version 9.1.2 with calendar 1.4.1

is this linked to the effect, that if I share with edit rights my calendar to any other user, I can update the calendar but if the shared user updates the calendar it doesn't have any effects on the calendar?

[kwisatz]

Same here after upgrading from 9.1.6.2 to 10.0.8.5
Users report they can no longer see previously shared calendars.

{"reqId":"7nyVnYEuWo4XzVKzBV6R","level":3,"time":"2018-05-04T09:26:42+00:00","remoteAddr":"195.218.30.41","user":"**************","app":"OCP\\Share","method":"GET","url":"\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=foo&perPage=200&itemType=principals","message":"Sharing backend for principals not found"}
{"reqId":"cRd5VX3WvmNPHqWrx6hz","level":3,"time":"2018-05-04T09:26:42+00:00","remoteAddr":"195.218.30.41","user":"**************","app":"OCP\\Share","method":"GET","url":"\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=foob&perPage=200&itemType=principals","message":"Sharing backend for principals not found"}

[PVince81]

@DeepDiver1975

[serumk]

Similar issue here after upgrading vom 9.1.x to 10.0.8.5, calendar 1.5.7: users can share calendars with other individual users, but not with groups. In the log the following message pops up:
{"reqId":"CXSuaSQxqN2biCfB9qSg","level":3,"time":"2018-05-24T13:18:00+00:00","remoteAddr":"192.168.0.130","user":"username","app":"OCP\\Share","method":"GET","url":"\/ocs\/v1.php\/apps\/files_sharing\/api\/v1\/sharees?format=json&search=alle&perPage=200&itemType=principals","message":"Sharing backend for principals not found"}
maybe a hint: the avatar image of the group is not found. usually (e.g. when sharing files) there is an "A" on a colored circles (the group is called "alle"), when choosing the group in the calendar there's an "X" on a grey circle

EDIT: my issue seems to be #31402

[ownclouders]

Hey, this issue has been closed because the label status/STALE is set and there were no updates for 7 days. Feel free to reopen this issue if you deem it appropriate.

(This is an automated comment from GitMate.io.)

[PVince81]

please try with OC 10.0.9 RC2

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.