Client sends bad request

[heull001]

Description

I use KeePassium on iOS as password-manager. The database-file is synced via seafile, KeePassium uses directly the up-to-date file via storage locations -> SeafilePro -> myuser|myhost.tld -> mylib -> myfile. This worked fine the most time, but since some days or weeks a Problem appears repeatedly.

When I open the Database via KePassium, it prints the message "The database is unavailable."

Logfiles

In the webserver-log for location /seafhttp the following lines appear:

• myipv6 [09/Jun/2023:13:42:15 +0200] "GET /seafhttp/files/2ff8cf30-6554-4867-b8d9-b3a24451a0e1/db.kdbx HTTP/2.0" 400 55 "-" "SeafFileProvider/1 CFNetwork/1408.0.4 Darwin/22.5.0" 0.004
• myipv6 [09/Jun/2023:13:42:15 +0200] "GET /seafhttp/files/2d4cc05b-ebd4-480c-9261-49e50aa8a4e1/db.kdbx HTTP/2.0" 400 55 "-" "SeafFileProvider/1 CFNetwork/1408.0.4 Darwin/22.5.0" 0.000
• myipv6 [09/Jun/2023:13:42:55 +0200] "GET /seafhttp/files/c5f9b1b9-ac83-4c39-ae24-4696f24d9dfc/db.kdbx HTTP/2.0" 400 55 "-" "SeafFileProvider/1 CFNetwork/1408.0.4 Darwin/22.5.0" 0.004

Refreshing and accessing Data in SeafilePro-app directly works fine.

• myipv6 [09/Jun/2023:14:03:36 +0200] "GET /seafhttp/files/854547c6-a12e-416c-8000-0e396
  feb4386/db.kdbx HTTP/2.0" 200 15566 "-" "SeafilePro/1 CFNetwork/1408.0.4 Darwin/22.5.0" 0.012

System:

mobile

• iOS 16.5
• SeafilePro 2.9.23
• KeePassium v1.44.134

Server

• Ubuntu 22.04
• Seafile Community Edition 10.0.1
• nginx 1.18.0