Hi,
I am facing issues with nextcloud for a Long time now. I mainly use nextcloud for the wider Family, so I have 5 Clients with at average let’s say 150GB storage.
So since a Long time (unfortunately I cannot tell when it started), all of the users are being logged out from time to time.
On the Desktop Client this means that the Icon in the tray turns Grey and the user has to log in again.
In the last time I am also logged out of my Android app from time to time.
I am Hosting nextcloud via the public docker Image. Previously I had a manually configured nginx as reverseproxy, however I already switched to the nginx-proxy docker Image as described on the official documentation but without success.
Here are two log excerpts that may cause the issue, unfortunately I have no clue how to fix it. Maybe someone of you has an idea?
I’m absolutely sure it’s not because of a bad Password, because 1. I never type my Password wrong 
And 2. it happens at all Clients and I don’t expect all of them re-entering their Password wrong all the time.
{
"reqId": "ckgUgfTYFz2NEj2Zohwh",
"level": 2,
"time": "2020-09-14T11:20:31+00:00",
"remoteAddr": "91.42.27.204",
"user": "peez",
"app": "core",
"method": "GET",
"url": "/ocs/v2.php/core/navigation/apps?absolute=true&format=json",
"message": "Login failed: 'peez' (Remote IP: '91.42.27.204')",
"userAgent": "Mozilla/5.0 (Windows) mirall/3.0.1stable-Win64 (build 20200828) (Nextcloud)",
"version": "19.0.3.1"
}
Second one:
{
"reqId": "NDeXKxMkhFxp5NjqX9zV",
"level": 0,
"time": "2020-09-14T11:20:41+00:00",
"remoteAddr": "91.42.27.204",
"user": "--",
"app": "webdav",
"method": "PROPFIND",
"url": "/remote.php/dav/files/peez/Eigene%20Dateien/Pictures",
"message": {
"Exception": "Sabre\\DAV\\Exception\\NotAuthenticated",
"Message": "No public access to this resource., No 'Authorization: Basic' header found. Either the client didn't send one, or the server is misconfigured, No 'Authorization: Bearer' header found. Either the client didn't send one, or the server is mis-configured, No 'Authorization: Basic' header found. Either the client didn't send one, or the server is misconfigured",
"Code": 0,
"Trace": [
{
"file": "/var/www/html/3rdparty/sabre/event/lib/WildcardEmitterTrait.php",
"line": 89,
"function": "beforeMethod",
"class": "Sabre\\DAV\\Auth\\Plugin",
"type": "->",
"args": [
{
"__class__": "Sabre\\HTTP\\Request"
},
{
"__class__": "Sabre\\HTTP\\Response"
}
]
},
{
"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php",
"line": 458,
"function": "emit",
"class": "Sabre\\DAV\\Server",
"type": "->",
"args": [
"beforeMethod:PROPFIND",
[
{
"__class__": "Sabre\\HTTP\\Request"
},
{
"__class__": "Sabre\\HTTP\\Response"
}
]
]
},
{
"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php",
"line": 251,
"function": "invokeMethod",
"class": "Sabre\\DAV\\Server",
"type": "->",
"args": [
{
"__class__": "Sabre\\HTTP\\Request"
},
{
"__class__": "Sabre\\HTTP\\Response"
}
]
},
{
"file": "/var/www/html/3rdparty/sabre/dav/lib/DAV/Server.php",
"line": 319,
"function": "start",
"class": "Sabre\\DAV\\Server",
"type": "->",
"args": []
},
{
"file": "/var/www/html/apps/dav/lib/Server.php",
"line": 320,
"function": "exec",
"class": "Sabre\\DAV\\Server",
"type": "->",
"args": []
},
{
"file": "/var/www/html/apps/dav/appinfo/v2/remote.php",
"line": 35,
"function": "exec",
"class": "OCA\\DAV\\Server",
"type": "->",
"args": []
},
{
"file": "/var/www/html/remote.php",
"line": 167,
"args": [
"/var/www/html/apps/dav/appinfo/v2/remote.php"
],
"function": "require_once"
}
],
"File": "/var/www/html/3rdparty/sabre/dav/lib/DAV/Auth/Plugin.php",
"Line": 161,
"CustomMessage": "--"
},
"userAgent": "Mozilla/5.0 (Windows) mirall/3.0.1stable-Win64 (build 20200828) (Nextcloud)",
"version": "19.0.3.1"
}