All shared folders lost. Shows up as n/a

So all my shares just vanished. And I cant add new users.
When I try to edit a share that has vanished it shows this:

Failed to execute XPath query '//system/fstab/mntent[uuid='0e434a35-...-95e98a926706']'.
Error #0: exception 'OMV\Config\DatabaseException' with message 'Failed to execute XPath query '//system/fstab/mntent[uuid='0e434a35...-95e98a926706']'.' in /usr/share/php/openmediavault/config/database.inc:78 Stack trace:
#0 /usr/share/openmediavault/engined/rpc/sharemgmt.inc(231): OMV\Config\Database->get('conf.system.fil...', '0e434a35-0ea3-4...')
#1 [internal function]: OMVRpcServiceShareMgmt->get(Array, Array)
#2 /usr/share/php/openmediavault/rpc/serviceabstract.inc(124): call_user_func_array(Array, Array)
#3 /usr/share/php/openmediavault/rpc/rpc.inc(86): OMV\Rpc\ServiceAbstract->callMethod('get', Array, Array)
#4 /usr/sbin/omv-engined(536): OMV\Rpc\Rpc::call('ShareMgmt', 'get', Array, Array, 1)
#5 {main}

Plz halp?

All ZFS pools were still available and no corruptions. I ended up deleting all shares and redoing them. Seems like the UUIDs were lost or something. For all SMB, rsync and users. Some update that didnt work as it should maybe. Since I didnt really do anything with the server to provoke it.