Update von 15.0.7 bringt Fehler bzgl. Remove potentially over exposing link shares

Hallo,

bei einem Update von 15.0.7 auf die aktuelle 15 Version 15.0.10 bringt einen Fehler am Ende.

Verwendet wird:
Nextcloud 15.0.7
Ubuntu Server 16.04
Die integrierte sql lite Datenbank

2019-07-22T08:35:50+00:00 Repair step: Queue a one-time job to cleanup old backups of the updater
2019-07-22T08:35:50+00:00 Repair step: Repair pending cron jobs
2019-07-22T08:35:50+00:00 Repair info: No need to repair pending cron jobs.
2019-07-22T08:35:50+00:00 Repair step: Extract the vcard uid and store it in the db
2019-07-22T08:35:50+00:00 Repair step: Remove potentially over exposing share links
2019-07-22T08:35:50+00:00 Repair info: Removing potentially over exposing link shares
2019-07-22T08:35:50+00:00 Remove potentially over exposing share links
2019-07-22T08:35:50+00:00
2019-07-22T08:35:50+00:00  Starting ...
 0/1 [>-]   0%An unhandled exception has been thrown:
TypeError: Argument 1 passed to OC\Repair\RemoveLinkShares::addToNotify() must be of the type string, null given, called in /var/www/nextcloud/lib/private/Repair/RemoveLinkShares.php on line 168 and defined in /var/www/nextcloud/lib/private/Repair/RemoveLinkShares.php:179
Stack trace:
#0 /var/www/nextcloud/lib/private/Repair/RemoveLinkShares.php(168): OC\Repair\RemoveLinkShares->addToNotify(NULL)
#1 /var/www/nextcloud/lib/private/Repair/RemoveLinkShares.php(209): OC\Repair\RemoveLinkShares->processShare(Array)
#2 /var/www/nextcloud/lib/private/Repair/RemoveLinkShares.php(233): OC\Repair\RemoveLinkShares->repair(Object(OC\Repair), 1)
#3 /var/www/nextcloud/lib/private/Repair.php(99): OC\Repair\RemoveLinkShares->run(Object(OC\Repair))
#4 /var/www/nextcloud/lib/private/Updater.php(272): OC\Repair->run()
#5 /var/www/nextcloud/lib/private/Updater.php(128): OC\Updater->doUpgrade('15.0.10.0', '15.0.7.0')
#6 /var/www/nextcloud/core/Command/Upgrade.php(258): OC\Updater->upgrade()
#7 /var/www/nextcloud/3rdparty/symfony/console/Command/Command.php(255): OC\Core\Command\Upgrade->execute(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#8 /var/www/nextcloud/3rdparty/symfony/console/Application.php(946): Symfony\Component\Console\Command\Command->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#9 /var/www/nextcloud/3rdparty/symfony/console/Application.php(248): Symfony\Component\Console\Application->doRunCommand(Object(OC\Core\Command\Upgrade), Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#10 /var/www/nextcloud/3rdparty/symfony/console/Application.php(148): Symfony\Component\Console\Application->doRun(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#11 /var/www/nextcloud/lib/private/Console/Application.php(213): Symfony\Component\Console\Application->run(Object(Symfony\Component\Console\Input\ArgvInput), Object(Symfony\Component\Console\Output\ConsoleOutput))
#12 /var/www/nextcloud/console.php(96): OC\Console\Application->run()
#13 /var/www/nextcloud/occ(11): require_once('/var/www/nextcl...')
#14 {main}
Keep maintenance mode active? [y/N]

Wo kann der Fehler liegen?
Kann er Links nicht entfernen?

Vielen Dank!

Viele Grüße

Andy

Einer eine Idee oder braucht ihr noch weitere Infos?