Issue with `session` option in Docker after version 25.12.20

[Bonerserk]

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Operating System:

• Linux

Script Mode

• Docker

Ebook2Audiobook Version

• v25.12.32

Process Mode

• Headless

Terminal log
_ebook2audiobook_logs.txt

Description:
After version 25.12.20, running the application in Docker causes an error when the session option is specified. If the session parameter is set either in a Docker Compose file or via the docker run command, the following error occurs:

Conversion failed: 'bool' object does not support item assignment

This error results in the container stopping unexpectedly.

Important Note:

• Version 25.12.20 still works correctly with the session option.
• If the session option is commented out or removed, the container starts without any problem and begins the conversion process as expected.

---

Steps to Reproduce:

Using Docker Compose:

ebook2audiobook:
  image: docker.io/athomasson2/ebook2audiobook:v25.12.32-cpu
  container_name: ebook2audiobook
  pull_policy: always
  command: [
    "--headless",
    "--language", "ita",
    "--tts_engine", "XTTSv2",
    "--temperature", "1.30",
    "--output_dir","/app/audiobooks",
    "--ebook","/app/audiobooks/StoriaBreve3.epub",
    "--session", "SomeCode",  # Removing this line avoids the error
  ]
  ports:
    - 7861:7860
  volumes:
    - ./ebook2audiobook/audiobooks:/app/audiobooks
    - ./ebook2audiobook/tmp:/app/tmp

Using Docker Run:

sudo docker run --rm -it \
  -v "./ebook2audiobook/audiobooks:/app/audiobooks" \
  -v "./ebook2audiobook/tmp:/app/tmp" \
  -p 7861:7860 \
  docker.io/athomasson2/ebook2audiobook:v25.12.32-cpu \
  --headless --language "ita" --tts_engine "XTTSv2" --temperature "1.30" \
  --output_dir "/app/audiobooks" --ebook "/app/audiobooks/StoriaBreve3.epub" \
  --session "SomeCode"

---

Expected Behaviour:
The container should start and process the session without errors.

Actual Behaviour:
The container fails with the error above and stops.

---

Environment:

• Docker version: 27.1.2, build d01f264
• OS: Ubuntu 24.04.3 LTS
• Image version: v25.12.32-cpu

---

Additional Context:

• Issue does not occur in version 25.12.20.
• Removing or commenting out the --session option allows the container to start and perform the conversion successfully.

[ROBERT-MCDOWELL]

do you have the full log of the conversion? attach it here thanks.

[Bonerserk]

The attached file contains the complete log from a newly created container, set up from scratch to ensure a clean environment. If there’s a way to obtain a more detailed log, please let me know. Thank you.

[ROBERT-MCDOWELL]

I need the log of the docker build and conversion. the log you provided has only 4 lines.

[Bonerserk]

I didn't build the container. I used the image in the Docker hub directly. And that 4 lines are the complete log of the container from start. The container stops before starting the conversion, that's why there are only 4 lines and no conversion logs. I will build the container and update you with the log.

[ROBERT-MCDOWELL]

ok not easy to reproduce and fix your bug and so without terminal log.

[MariuBe]

I have the same issue but not with the docker image but the "normal" installation

logfile attached

log.txt

[ROBERT-MCDOWELL]

I have the same issue but not with the docker image but the "normal" installation

logfile attached

log.txt

first you don't need to force the installation with DEVICE_TAG, you should install with simply ./ebook2audiobook.sh as it doesn't help me to fix potential bugs on the installation script to recognize the hardware. so it won't help you and other users if everyone is forcing the hardware installation with DEVICE_TAG and can cause new bugs.

this kind of error is certainly due to a browser cookie cache clean or disconnected gradio socket. try with another browser or clean the cookie cache and restart your browser to see if it pesists.

[MariuBe]

ok I will omit the DEVICE_TAG
for my case a browser cookie can not be the culprit because it was running in headless mode

[ROBERT-MCDOWELL]

ok this is different indeed.
could uninstall all, remove the folder clone the last git and reinstall with ./ebook2audiobook.sh
the provide the full installation TERMINAL log.
then start a a conversion (provide the file you convert here), and provide the FULL TERMINAL log untion it throw the error.
I need to reproduce the bug to debug.

[Marius-Becker]

Ok I will install it tomorrow on a fresh machine