It has also tried the proxy_passs an http, with the same error.
This is like finding a needle in a pocket: stressful and disappointing.


root@BaseVPS-ubuntu1804-django20:~# systemctl status gunicorn
● gunicorn.service - gunicorn daemon
Loaded: loaded (/etc/systemd/system/gunicorn.service; disabled; vendor preset: enabled)
Active: failed (Result: exit-code) since Wed 2018-09-05 20:34:38 UTC; 12min ago
Process: 8842 ExecStart=/home/gela/.virtualenvs/django20/bin/gunicorn --access-logfile - --workers 3 --bind unix:/run/gunicorn.sock LibrosWeb.wsgi:application (code=exited, status=1/FAILURE)
Main PID: 8842 (code=exited, status=1/FAILURE)

sep 05 20:34:38 BaseVPS-ubuntu1804-django20 gunicorn[8842]: self.stop()
sep 05 20:34:38 BaseVPS-ubuntu1804-django20 gunicorn[8842]: File "/home/gela/.virtualenvs/django20/lib/python3.6/site-packages/gunicorn/arbiter.py", line 393, in stop
sep 05 20:34:38 BaseVPS-ubuntu1804-django20 gunicorn[8842]: time.sleep(0.1)
sep 05 20:34:38 BaseVPS-ubuntu1804-django20 gunicorn[8842]: File "/home/gela/.virtualenvs/django20/lib/python3.6/site-packages/gunicorn/arbiter.py", line 245, in handle_chld
sep 05 20:34:38 BaseVPS-ubuntu1804-django20 gunicorn[8842]: self.reap_workers()
sep 05 20:34:38 BaseVPS-ubuntu1804-django20 gunicorn[8842]: File "/home/gela/.virtualenvs/django20/lib/python3.6/site-packages/gunicorn/arbiter.py", line 525, in reap_workers
sep 05 20:34:38 BaseVPS-ubuntu1804-django20 gunicorn[8842]: raise HaltServer(reason, self.WORKER_BOOT_ERROR)
sep 05 20:34:38 BaseVPS-ubuntu1804-django20 gunicorn[8842]: gunicorn.errors.HaltServer: <HaltServer 'Worker failed to boot.' 3>
sep 05 20:34:38 BaseVPS-ubuntu1804-django20 systemd[1]: gunicorn.service: Main process exited, code=exited, status=1/FAILURE
sep 05 20:34:38 BaseVPS-ubuntu1804-django20 systemd[1]: gunicorn.service: Failed with result 'exit-code'.

root@BaseVPS-ubuntu1804-django20:~# systemctl status gunicorn.socket
Failed to dump process list, ignoring: No such file or directory
● gunicorn.socket - gunicorn socket
Loaded: loaded (/etc/systemd/system/gunicorn.socket; enabled; vendor preset: enabled)
Active: active (listening) since Wed 2018-09-05 20:34:37 UTC; 13min ago
Listen: /run/gunicorn.sock (Stream)
CGroup: /system.slice/gunicorn.socket

sep 05 20:34:37 BaseVPS-ubuntu1804-django20 systemd[1]: Listening on gunicorn socket.