Dokku: setuidgid: fatal: unable to run gunicorn: file does not exist

Question

I am trying to run my application in Dokku

I get this error:

5b188e740fcae5a5080e2ac498e6b93a593ae107e656c53e5df1d8c8e13948c8
remote:  !     App container failed to start!!
=====> lala web container output:
       setuidgid: fatal: unable to run gunicorn: file does not exist
       setuidgid: fatal: unable to run gunicorn: file does not exist
       setuidgid: fatal: unable to run gunicorn: file does not exist
       setuidgid: fatal: unable to run gunicorn: file does not exist
       setuidgid: fatal: unable to run gunicorn: file does not exist
       setuidgid: fatal: unable to run gunicorn: file does not exist
       setuidgid: fatal: unable to run gunicorn: file does not exist
=====> end lala web container output
remote: 2020/12/17 23:22:13 exit status 1
remote: 2020/12/17 23:22:13 exit status 1
remote: 2020/12/17 23:22:13 exit status 1
To coffee-and-sugar.club:lala
 ! [remote rejected] main -> master (pre-receive hook declined)

Answer 1

I guess you have a Procfile like this:

web: gunicorn mysite.wsgi:application

I need to install the python package first.

Add gunicorn to your requirements.txt file.