calibre crashed with ImportError in __init__(): /usr/lib/calibre/calibre/plugins/progress_indicator.so: undefined symbol: _Py_FatalErrorFunc

[corrado venturini]

Just selected calibre to see a .mobi file
click on a .mobi file
select open with calibre
caribre crash

corrado@corrado-x2-hh-1104:~$ apt policy calibre
calibre:
  Installed: 5.5.0+dfsg-3
  Candidate: 5.5.0+dfsg-3
  Version table:
 *** 5.5.0+dfsg-3 500
        500 http://archive.ubuntu.com/ubuntu hirsute/universe amd64 Packages
        500 http://archive.ubuntu.com/ubuntu hirsute/universe i386 Packages
        100 /var/lib/dpkg/status
corrado@corrado-x2-hh-1104:~$ inxi -Fx
System: Host: corrado-x2-hh-1104 Kernel: 5.8.0-25-generic x86_64 bits: 64 compiler: gcc
           v: 10.2.0 Desktop: GNOME 3.38.1 Distro: Ubuntu 21.04 (Hirsute Hippo)
Machine: Type: Desktop Mobo: ASRock model: H110M-G/M.2 serial: <superuser/root required>
           UEFI: American Megatrends v: P1.10 date: 05/11/2017
CPU: Info: Dual Core model: Intel Core i3-7100 bits: 64 type: MT MCP arch: Kaby Lake
           rev: 9 L2 cache: 3072 KiB
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 31199
           Speed: 800 MHz min/max: 800/3900 MHz Core speeds (MHz): 1: 800 2: 800 3: 800
           4: 800
Graphics: Device-1: Intel HD Graphics 630 vendor: ASRock driver: i915 v: kernel
           bus ID: 00:02.0
           Display: x11 server: X.Org 1.20.9 driver: modesetting unloaded: fbdev,vesa
           resolution: 1920x1080~60Hz
           OpenGL: renderer: Mesa Intel HD Graphics 630 (KBL GT2) v: 4.6 Mesa 20.2.1
           direct render: Yes
Audio: Device-1: Intel 100 Series/C230 Series Family HD Audio vendor: ASRock
           driver: snd_hda_intel v: kernel bus ID: 00:1f.3
           Device-2: Logitech QuickCam Pro 9000 type: USB driver: snd-usb-audio,uvcvideo
           bus ID: 1-8:4
           Sound Server: ALSA v: k5.8.0-25-generic
Network: Device-1: Intel Ethernet I219-V vendor: ASRock driver: e1000e v: 3.2.6-k
           port: f040 bus ID: 00:1f.6
           IF: enp0s31f6 state: up speed: 100 Mbps duplex: full mac: 70:85:c2:44:7b:86
Drives: Local Storage: total: 2.05 TiB used: 81.03 GiB (3.9%)
           ID-1: /dev/nvme0n1 vendor: Kingston model: SKC2000M8250G size: 232.89 GiB
           ID-2: /dev/sda vendor: Toshiba model: DT01ACA100 size: 931.51 GiB
           ID-3: /dev/sdb vendor: Hitachi model: HDS721010CLA332 size: 931.51 GiB
Partition: ID-1: / size: 31.25 GiB used: 15.20 GiB (48.7%) fs: ext4 dev: /dev/nvme0n1p2
Swap: ID-1: swap-1 type: partition size: 8.00 GiB used: 0 KiB (0.0%) dev: /dev/sda2
Sensors: System Temperatures: cpu: 43.5 C mobo: N/A
           Fan Speeds (RPM): N/A
Info: Processes: 221 Uptime: 1h 50m Memory: 7.48 GiB used: 2.01 GiB (26.8%)
           Init: systemd runlevel: 5 Compilers: gcc: N/A Packages: 1933 Shell: Bash
           v: 5.1.0-rc2 inxi: 3.1.09
corrado@corrado-x2-hh-1104:~$

ProblemType: Crash
DistroRelease: Ubuntu 21.04
Package: calibre 5.5.0+dfsg-3
ProcVersionSignature: Ubuntu 5.8.0-25.26-generic 5.8.14
Uname: Linux 5.8.0-25-generic x86_64
ApportVersion: 2.20.11-0ubuntu51
Architecture: amd64
CasperMD5CheckResult: skip
CrashCounter: 1
CurrentDesktop: ubuntu:GNOME
Date: Tue Nov 24 14:08:44 2020
ExecutablePath: /usr/bin/calibre
ExecutableTimestamp: 1606152794
InstallationDate: Installed on 2020-11-04 (20 days ago)
InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Alpha amd64 (20201104)
InterpreterPath: /usr/bin/python3.8
PackageArchitecture: all
ProcCmdline: /usr/bin/python3 /usr/bin/calibre /media/corrado/dati2/calibre/CarlSaganIlMondoInfestatoDaiDemoni.mobi
ProcCwd: /home/corrado
Python3Details: /usr/bin/python3.8, Python 3.8.6, python3-minimal, 3.8.6-1
PythonArgs: ['/usr/bin/calibre', '/media/corrado/dati2/calibre/CarlSaganIlMondoInfestatoDaiDemoni.mobi']
PythonDetails: N/A
SourcePackage: calibre
Title: calibre crashed with ImportError in __init__(): /usr/lib/calibre/calibre/plugins/progress_indicator.so: undefined symbol: _Py_FatalErrorFunc
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo

[corrado venturini (corradoventu)]

Problem solved with today updates:
corrado@corrado-x2-hh-1104:~$ apt policy calibre
calibre:
  Installed: 5.5.0+dfsg-4
  Candidate: 5.5.0+dfsg-4
  Version table:
 *** 5.5.0+dfsg-4 500
        500 http://archive.ubuntu.com/ubuntu hirsute/universe amd64 Packages
        500 http://archive.ubuntu.com/ubuntu hirsute/universe i386 Packages
        100 /var/lib/dpkg/status
corrado@corrado-x2-hh-1104:~$

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[siiky (siiky)]

I also have this problem on Debian Testing.

```
$ apt policy calibre
calibre:
  Installed: 5.5.0+dfsg-1
  Candidate: 5.5.0+dfsg-1
  Version table:
 *** 5.5.0+dfsg-1 990
        990 http://ftp.pt.debian.org/debian testing/main amd64 Packages
        990 http://ftp.pt.debian.org/debian testing/main i386 Packages
        100 /var/lib/dpkg/status
     3.39.1+dfsg-3 900
        900 http://ftp.pt.debian.org/debian stable/main amd64 Packages
        900 http://ftp.pt.debian.org/debian stable/main i386 Packages
```

```
$ calibre
Traceback (most recent call last):
  File "/usr/bin/calibre", line 20, in <module>
    sys.exit(calibre())
  File "/usr/lib/calibre/calibre/gui_launch.py", line 73, in calibre
    main(args)
  File "/usr/lib/calibre/calibre/gui2/main.py", line 509, in main
    app, opts, args = init_qt(args)
  File "/usr/lib/calibre/calibre/gui2/main.py", line 122, in init_qt
    app = Application(args, override_program_name=override, windows_app_uid=MAIN_APP_UID)
  File "/usr/lib/calibre/calibre/gui2/__init__.py", line 885, in __init__
    from calibre_extensions import progress_indicator
ImportError: /usr/lib/calibre/calibre/plugins/progress_indicator.so: undefined symbol: _Py_FatalErrorFunc
```

[corrado venturini (corradoventu)]

Disappeared with new Calibre releases. changing to invalid.