NextCloud Ubuntu Snap after upgrade fails to run

Hi,
Running Ubuntu 20.04, Nextcloud installed by Snap. Nextcloud has been running perfect until the last update by snap. Now it is broken. If I do a snap revert back to older version it works.

I get this error on the web page.

Internal Server Error

The server encountered an internal error and was unable to complete your request.
Please contact the server administrator if this error reappears multiple times, please include the technical details below in your report.
More details can be found in the server log.

I do not know where the logs are to find the error.

I run nextcloud.occ status and get this:

root@Web-Server:~# nextcloud.occ status
An unhandled exception has been thrown:
Exception: Redis cluster config is missing the “seeds” attribute in /snap/nextcloud/28549/htdocs/lib/private/RedisFactory.php:86
Stack trace:
#0 /snap/nextcloud/28549/htdocs/lib/private/RedisFactory.php(164): OC\RedisFactory->create()
#1 /snap/nextcloud/28549/htdocs/lib/private/Memcache/Redis.php(43): OC\RedisFactory->getInstance()
#2 /snap/nextcloud/28549/htdocs/lib/private/Memcache/Factory.php(115): OC\Memcache\Redis->__construct(‘6e9cf4a1b8eda30…’)
#3 /snap/nextcloud/28549/htdocs/lib/private/Server.php(1051): OC\Memcache\Factory->createLocking(‘lock’)
#4 /snap/nextcloud/28549/htdocs/lib/private/AppFramework/Utility/SimpleContainer.php(160): OC\Server->OC{closure}(Object(OC\Server))
#5 /snap/nextcloud/28549/htdocs/3rdparty/pimple/pimple/src/Pimple/Container.php(118): OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility{closure}(Object(Pimple\Container))
#6 /snap/nextcloud/28549/htdocs/lib/private/AppFramework/Utility/SimpleContainer.php(127): Pimple\Container->offsetGet(‘OCP\Lock\ILocki…’)
#7 /snap/nextcloud/28549/htdocs/lib/private/ServerContainer.php(136): OC\AppFramework\Utility\SimpleContainer->query(‘OCP\Lock\ILocki…’, false)
#8 /snap/nextcloud/28549/htdocs/lib/private/AppFramework/Utility/SimpleContainer.php(56): OC\ServerContainer->query(‘OCP\Lock\ILocki…’)
#9 /snap/nextcloud/28549/htdocs/lib/private/Server.php(2010): OC\AppFramework\Utility\SimpleContainer->get(‘OCP\Lock\ILocki…’)
#10 /snap/nextcloud/28549/htdocs/lib/private/Files/View.php(118): OC\Server->getLockingProvider()
#11 /snap/nextcloud/28549/htdocs/lib/private/Server.php(433): OC\Files\View->__construct()
#12 /snap/nextcloud/28549/htdocs/lib/private/AppFramework/Utility/SimpleContainer.php(160): OC\Server->OC{closure}(Object(OC\Server))
#13 /snap/nextcloud/28549/htdocs/3rdparty/pimple/pimple/src/Pimple/Container.php(118): OC\AppFramework\Utility\SimpleContainer->OC\AppFramework\Utility{closure}(Object(Pimple\Container))
#14 /snap/nextcloud/28549/htdocs/lib/private/AppFramework/Utility/SimpleContainer.php(127): Pimple\Container->offsetGet(‘OC\Files\Node\H…’)
#15 /snap/nextcloud/28549/htdocs/lib/private/ServerContainer.php(136): OC\AppFramework\Utility\SimpleContainer->query(‘OC\Files\Node\H…’, false)
#16 /snap/nextcloud/28549/htdocs/lib/private/AppFramework/Utility/SimpleContainer.php(56): OC\ServerContainer->query(‘OC\Files\Node\H…’)
#17 /snap/nextcloud/28549/htdocs/lib/private/Server.php(1373): OC\AppFramework\Utility\SimpleContainer->get(‘OC\Files\Node\H…’)
#18 /snap/nextcloud/28549/htdocs/lib/base.php(594): OC\Server->boot()
#19 /snap/nextcloud/28549/htdocs/lib/base.php(1083): OC::init()
#20 /snap/nextcloud/28549/htdocs/console.php(48): require_once(’/snap/nextcloud…’)
#21 /snap/nextcloud/28549/htdocs/occ(11): require_once(’/snap/nextcloud…’)

That’s wonky. Have you seen this?

My snap redis config for the same revision looks like this:

"redis": {
  "host": "***REMOVED SENSITIVE VALUE***",
  "port": 0
},

No seeds attribute, and no error. There is something else going on, here.