Backend not running (exit with 2)

[Oracleman200]

I got the following error in the log

usage: gunicorn [OPTIONS] [APP_MODULE]

gunicorn: error: unrecognized arguments: --capture-output

[oraclegb]

I got the following error in the log

usage: gunicorn [OPTIONS] [APP_MODULE]

gunicorn: error: unrecognized arguments: --capture-output

[TheBestJohn]

open the backend start_prod.sh and remove the --capture-output flag. It was only intended to "capture gunicorn stdout/stderr to the log file" as per benoitc/gunicorn#1271. Does not seem to be a process critical functionality for this application

[Gabi-Alex]

open the backend start_prod.sh and remove the --capture-output flag.

I did that, but the error message now is mrs-backend | gunicorn: error: unrecognized arguments:. It's the same, but without --capture-output after it.

[krisgesling]

I'm assuming there was a breaking change in the gunicorn package at some point. Have you tried rolling back a version?
eg

pip install gunicorn==20.0.4

[mgochmuradov]

I had the same problem on Windows, I guess this is because of the line ending on windows.
Workaround:
Recreate this file with the same content with Linux (WSL)

[RobinE89]

same problem under windows. actually docker should be the workaround for #87 .... now we are already at the workaround of the workaround
edit: thx @mgochmuradov -> this was working for me