[Pkg-matrix-maintainers] Bug#978640: undefined symbol: _ZTIN3fmt2v612format_errorE

[Utkarsh Gupta]

Package: nheko
Version: 0.7.2-3
Severity: grave

Dear maintainer,

Whilst trying to open nheko, it fails to open with the following message:

```
$ nheko
nheko: symbol lookup error: nheko: undefined symbol: _ZTIN3fmt2v612format_errorE
```

Is that known? Any idea what caused this regression or failure? Any
workaround this?



-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.9.0-5-amd64 (SMP w/8 CPU threads)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8),
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages nheko depends on:
ii  libboost-iostreams1.74.0       1.74.0-6
ii  libboost-thread1.74.0          1.74.0-6
ii  libc6                          2.31-6
ii  libcmark0.29.0                 0.29.0-4
ii  libgcc-s1                      10.2.1-3
ii  liblmdb0                       0.9.24-1
ii  libolm3                        3.2.1~dfsg-5
ii  libqt5core5a                   5.15.2+dfsg-2
ii  libqt5dbus5                    5.15.2+dfsg-2
ii  libqt5gui5                     5.15.2+dfsg-2
ii  libqt5network5                 5.15.2+dfsg-2
ii  libqt5qml5                     5.15.2+dfsg-2
ii  libqt5quick5                   5.15.2+dfsg-2
ii  libqt5quickwidgets5            5.15.2+dfsg-2
ii  libqt5widgets5                 5.15.2+dfsg-2
ii  libsodium23                    1.0.18-1
ii  libspdlog1                     1:1.8.1+ds-2+b1
ii  libssl1.1                      1.1.1i-1
ii  libstdc++6                     10.2.1-3
ii  qml-module-qt-labs-settings    5.15.2+dfsg-2
ii  qml-module-qtgraphicaleffects  5.15.2-2
ii  qml-module-qtmultimedia        5.15.2-2
ii  qml-module-qtquick-controls2   5.15.2+dfsg-2
ii  qml-module-qtquick-layouts     5.15.2+dfsg-2
ii  qml-module-qtquick-window2     5.15.2+dfsg-2
ii  qml-module-qtquick2            5.15.2+dfsg-2

Versions of packages nheko recommends:
ii  ca-certificates         20200601
ii  fonts-noto-color-emoji  0~20200916-1