qBittorrent-nox (Debian 11) crash when downloading new torrent

[GvY85]

qBittorrent & operating system versions

qBittorrent 4.3.8
Debian 11 Bullseye
Qt 5.15.2
Libtorrent 1.2.14.0
Boost 1.74.0

What is the problem?

My system with qBitttorrent-nox has been running for weeks in a row. Today I added a torrent and within seconds of downloading it crashed.
Restarting the service and the download makes it crash again within a few seconds.
Pausing the torrent and/or seeding other torrents is no problem

Steps to reproduce

Add new torrent via WebUI
Crash
Restart service
Crash again when restarting service

Additional context

No response

Log(s) & preferences file(s)

No response

[GvY85]

Using the same qBittorrent-nox version but build for Debian 10 with Qt 5.11.3 and Boost 1.67.0 does not exhibbit this problem

[GvY85]

The build with Qt 5.15.2 and Boost 1.74.0 also gives other problems aparently: #15420

[userdocs]

Install this https://packages.debian.org/experimental/gdb and https://packages.debian.org/experimental/qbittorrent-nox-dbgsym

apt install gdb qbittorrent-nox-dbgsym

then do gdb qbittorrent-nox

Once gdb has loaded the app and symbols at the prompt, type:

run

Then after it errors at the next prompt, type:

backtrace

And past that output here.

[GvY85]

I am at a loss. The instance gdp starts does not crash..

[userdocs]

Maybe you need to define some stuff to make sure gdb is loading the same settings (or do it as the same user or both?)

https://sourceware.org/gdb/onlinedocs/gdb/Environment.html

Also, does the main issue stopped now the debug symbols are installed?

[GvY85]

I have solved it by removing qbittorrent-nox and purging all dependencies and reinstalling them.

Thanks for the help