calibre-web and Synology
reddit / selfhosted

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jeffcdo · 2023-10-13 00:32

I've been running calibre-web successfully in Container Manager
(formerly Docker) until the latest update. Now I can no longer open
the app and the logs indicate an error "No module named 'flask"" Any
insight on how to repair this?

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Normanras · 2023-10-13 01:00

Have you opened an issue on repo for the devs to see? might as well go
straight to the source.

i’m assuming the flask module here is the flask that is a python
framework for building apps. sounds like the dependency wasn’t added
to the latest build

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jpedroleite · 2023-10-13 10:57

I had the exact same problem. I solved it by:

\- Deleting the container and image

\- Create a task in task scheduler with root user and with the
following config

`docker run -d \`
  `--name=calibre-web \`
  `-e PUID=1026 \`
  `-e PGID=100 \`
  `-e TZ=Europe/Lisbon \`
  `-e DOCKER_MODS=ghcr.io/linuxserver/mods:universal-calibre \`
  `-e OAUTHLIB_RELAX_TOKEN_SCOPE=1 \`
  `-e TP_THEME=aquamarine \`
  `-p 8083:8083 \`
  `-v /volume1/docker/calibre-web:/config \`
  `-v /volume1/docker/calibre/BibliotecaCalibre:/books \`
  `--restart unless-stopped \`
  `lscr.io/linuxserver/calibre-web`

Replace PUID and PGID by your own

It will this time install flask and all necessary python modules. All
your data and configs will be preserved

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jeffcdo · 2023-10-13 21:59

This worked perfectly, thank you jpedroleite!!

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888ak888 · 2023-10-26 13:45

I had exactly the same problem on OpenMediaVault and docker-compose.
Tried all sorts including deleting/pruning all containers and images.
Migrated to the manual command like above and that works fine. Going
back to docker-compose fails even though they share the same image.
Working for now so thanks!

​

Any idea why fails in docker-compose? Would like to get back as that's
how my other 40 containers run and good to keep it consistent.

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jeffcdo · 2023-10-27 07:36

How should I go about updating this in Container Manager? It no longer
seem to recognize the latest version. Should I simply change the last
line to [lscr.io/linuxserver/calibre-
web:latest](https://lscr.io/linuxserver/calibre-web:latest)? Or update
from within calibre-web?

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888ak888 · 2023-10-28 08:25

I ran this on the command line from the example above. Did not use the
admin interface in OMV (via the docker compose file) as that does not
seem to work and as I questioned I have no idea why as they both
utilise the same image but the command line one works without the
module missing error.