[BUG] Issue upgrading from 1.16 to latest 2.7.1

[cvocvo]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

I upgraded my docker container from 1.16.0 to 2.7.1 and now am getting a 502 Bad Gateway error on the web interface. In the logs I get this error:
s6-applyuidgid: fatal: unable to exec gunicorn: No such file or directory

Full log below.

Expected Behavior

Should launch successfully. I did try installing gunicorn on my host system which made no difference.

Steps To Reproduce

1. I was running an old BabyBuddy docker container v1.16.0
2. Pulled the latest 2.7.1
3. Launched the new docker container and got the errors above. I am using Portainer + Docker if that makes any difference.

Environment

- OS:Debian 12
- Docker: Docker version 28.3.1, build 38b7060
- Portainer: Portainer Community Edition 2.27.9 LTS
- How docker service was installed: Via CLI

CPU architecture

arm64

Docker creation

Will paste in follow-up comment, can't seem to paste a screenshot here.

Container logs

[migrations] started

[migrations] 01-nginx-site-confs-default: skipped

[migrations] 02-default-location: skipped

[migrations] done

usermod: no changes

───────────────────────────────────────

      ██╗     ███████╗██╗ ██████╗

      ██║     ██╔════╝██║██╔═══██╗

      ██║     ███████╗██║██║   ██║

      ██║     ╚════██║██║██║   ██║

      ███████╗███████║██║╚██████╔╝

      ╚══════╝╚══════╝╚═╝ ╚═════╝

   Brought to you by linuxserver.io

───────────────────────────────────────

To support the app dev(s) visit:

BabyBuddy: https://github.com/sponsors/cdubz

To support LSIO projects visit:

https://www.linuxserver.io/donate/

───────────────────────────────────────

GID/UID

───────────────────────────────────────

User UID:    1000

User GID:    1000

───────────────────────────────────────

Linuxserver.io version: v2.7.1-ls198

Build-date: 2025-07-06T21:28:35+00:00

───────────────────────────────────────

    

using keys found in /config/keys

Traceback (most recent call last):

  File "/app/www/public/manage.py", line 4, in <module>

    from dotenv import load_dotenv, find_dotenv

ModuleNotFoundError: No module named 'dotenv'

Traceback (most recent call last):

  File "/app/www/public/manage.py", line 4, in <module>

    from dotenv import load_dotenv, find_dotenv

ModuleNotFoundError: No module named 'dotenv'

**** The following active confs have different version dates than the samples that are shipped. ****

**** This may be due to user customization or an update to the samples. ****

**** You should compare the following files to the samples in the same folder and update them. ****

**** Use the link at the top of the file to view the changelog. ****

┌────────────┬────────────┬────────────────────────────────────────────────────────────────────────┐

│  old date  │  new date  │ path                                                                   │

├────────────┼────────────┼────────────────────────────────────────────────────────────────────────┤

│ 2022-08-20 │ 2023-08-13 │ /config/nginx/ssl.conf                                                 │

│ 2022-08-16 │ 2024-05-27 │ /config/nginx/nginx.conf                                               │

│ 2022-11-23 │ 2024-07-16 │ /config/nginx/site-confs/default.conf                                  │

└────────────┴────────────┴────────────────────────────────────────────────────────────────────────┘

[custom-init] No custom files found, skipping...

s6-applyuidgid: fatal: unable to exec gunicorn: No such file or directory

s6-applyuidgid: fatal: unable to exec gunicorn: No such file or directory

s6-applyuidgid: fatal: unable to exec gunicorn: No such file or directory

s6-applyuidgid: fatal: unable to exec gunicorn: No such file or directory

s6-applyuidgid: fatal: unable to exec gunicorn: No such file or directory

s6-applyuidgid: fatal: unable to exec gunicorn: No such file or directory

s6-applyuidgid: fatal: unable to exec gunicorn: No such file or directory

s6-applyuidgid: fatal: unable to exec gunicorn: No such file or directory

[cvocvo]

Configuration:

[github-actions]

Thanks for opening your first issue here! Be sure to follow the relevant issue templates, or risk having this issue marked as invalid.

[cvocvo]

Update; I edited my stack in Portainer and redeployed and the issue seems to be resolved. There must have been some other latent configuration setting that was preventing this from running.