Internal Server Error

I completed deleted the previous docker, and all the files left in appdata directory, pulled the latest, and started over. It worked for the past week until last night. This morning, all my nextcloud clients couldn't connect, and I believe the kill switch on my server got triggered; I restarted my unraid server. After all dockers were running, I got this error first

then it cycled between this and the previous one a little bit

now it gives only this:

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.

log seems to be a repeatition of this with different "reqId" and "time"

{"reqId":"Y2QEMoVcE1MMqBJs2Nd3ZgAAAEY","level":3,"time":"2022-11-03T18:10:58+00:00","remoteAddr":"69.75.39.170","user":"--","app":"remote","method":"GET","url":"/status.php","message":"WRONGPASS invalid username-password pair","userAgent":"Mozilla/5.0 (Windows) mirall/3.4.0stable-Win64 (build 20211129) (Nextcloud, windows-10.0.19044 ClientArchitecture: x86_64 OsArchitecture: x86_64)","version":"24.0.5.1","exception":{"Exception":"RedisException","Message":"WRONGPASS invalid username-password pair","Code":0,"Trace":[{"file":"/data/nextcloud/lib/private/RedisFactory.php","line":143,"function":"auth","class":"Redis","type":"->","args":["*** sensitive parameters replaced "]},{"file":"/data/nextcloud/lib/private/RedisFactory.php","line":178,"function":"create","class":"OC\RedisFactory","type":"->"},{"file":"/data/nextcloud/lib/private/Memcache/Redis.php","line":43,"function":"getInstance","class":"OC\RedisFactory","type":"->"},{"file":"/data/nextcloud/lib/private/Memcache/Factory.php","line":118,"function":"__construct","class":"OC\Memcache\Redis","type":"->"},{"file":"/data/nextcloud/lib/private/Server.php","line":1106,"function":"createLocking","class":"OC\Memcache\Factory","type":"->"},{"file":"/data/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php","line":162,"function":"OC\{closure}","class":"OC\Server","type":"->","args":[" sensitive parameters replaced "]},{"file":"/data/nextcloud/3rdparty/pimple/pimple/src/Pimple/Container.php","line":122,"function":"OC\AppFramework\Utility\{closure}","class":"OC\AppFramework\Utility\SimpleContainer","type":"->","args":[" sensitive parameters replaced "]},{"file":"/data/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php","line":129,"function":"offsetGet","class":"Pimple\Container","type":"->"},{"file":"/data/nextcloud/lib/private/ServerContainer.php","line":136,"function":"query","class":"OC\AppFramework\Utility\SimpleContainer","type":"->"},{"file":"/data/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php","line":57,"function":"query","class":"OC\ServerContainer","type":"->"},{"file":"/data/nextcloud/lib/private/Server.php","line":2082,"function":"get","class":"OC\AppFramework\Utility\SimpleContainer","type":"->"},{"file":"/data/nextcloud/lib/private/Files/View.php","line":122,"function":"getLockingProvider","class":"OC\Server","type":"->"},{"file":"/data/nextcloud/lib/private/Server.php","line":454,"function":"__construct","class":"OC\Files\View","type":"->"},{"file":"/data/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php","line":162,"function":"OC\{closure}","class":"OC\Server","type":"->","args":[" sensitive parameters replaced "]},{"file":"/data/nextcloud/3rdparty/pimple/pimple/src/Pimple/Container.php","line":122,"function":"OC\AppFramework\Utility\{closure}","class":"OC\AppFramework\Utility\SimpleContainer","type":"->","args":[" sensitive parameters replaced ***"]},{"file":"/data/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php","line":129,"function":"offsetGet","class":"Pimple\Container","type":"->"},{"file":"/data/nextcloud/lib/private/ServerContainer.php","line":136,"function":"query","class":"OC\AppFramework\Utility\SimpleContainer","type":"->"},{"file":"/data/nextcloud/lib/private/AppFramework/Utility/SimpleContainer.php","line":57,"function":"query","class":"OC\ServerContainer","type":"->"},{"file":"/data/nextcloud/lib/private/Server.php","line":1445,"function":"get","class":"OC\AppFramework\Utility\SimpleContainer","type":"->"},{"file":"/data/nextcloud/lib/base.php","line":602,"function":"boot","class":"OC\Server","type":"->"},{"file":"/data/nextcloud/lib/base.php","line":1111,"function":"init","class":"OC","type":"::"},{"file":"/data/nextcloud/status.php","line":37,"args":["/data/nextcloud/lib/base.php"],"function":"require_once"}],"File":"/data/nextcloud/lib/private/RedisFactory.php","Line":143,"CustomMessage":"--"}}`

I tried status.php, and it returned:

Bad Request
Your browser sent a request that this server could not understand.
Reason: You're speaking plain HTTP to an SSL-enabled server port.
Instead use the HTTPS scheme to access this URL, please.

Please let me know what info is needed to solve this issue. Thanks in advance.

Start by reviewing the RedisException trace in lib/private/RedisFactory.php and the status.php entry point, then compare the Redis-related configuration with the Docker setup described in the report. Done means the server and Nextcloud clients connect successfully without the WRONGPASS errors or repeated Internal Server Error responses.