title: gunicorn.errors.HaltServer: <HaltServer 'Worker failed to boot.' 3
body: <p>I followed this <a href="https://www.digitalocean.com/community/tutorials/how-to-set-up-django-with-postgres-nginx-and-gunicorn-on-ubuntu-18-04" rel="nofollow noreferrer">document</a> and I’m hitting this error. Could you let me know what I’m missing? I tried several things the whole day and nothing has worked? Please let me know if you know any solution on this?</p>
  
  <pre><code>$ sudo 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 Sun 2019-12-15 05:15:27 UTC; 17s ago
     Listen: /home/xx/myproject/myapp/myapp.sock (Stream)
     CGroup: /system.slice/gunicorn.socket
  
  Dec 15 05:15:27 ubuntu-s-01 systemd[1]: Listening on gunicorn socket.
  
  
  $ sudo systemctl status gunicorn.service
  ● gunicorn.service - gunicorn daemon
     Loaded: loaded (/etc/systemd/system/gunicorn.service; enabled; vendor preset: enabled)
     Active: failed (Result: exit-code) since Sun 2019-12-15 04:22:54 UTC; 53min ago
   Main PID: 15788 (code=exited, status=1/FAILURE)
  
  Dec 15 04:22:54 ubuntu-s-01 gunicorn[15788]:     self.stop()
  Dec 15 04:22:54 ubuntu-s-01 gunicorn[15788]:   File "/home/xx/myproject/xxenv/lib/python3.6/site-packages/gunicorn/arbi
  Dec 15 04:22:54 ubuntu-s-01 gunicorn[15788]:     time.sleep(0.1)
  Dec 15 04:22:54 ubuntu-s-01 gunicorn[15788]:   File "/home/xx/myproject/xxkenv/lib/python3.6/site-packages/gunicorn/arbi
  Dec 15 04:22:54 ubuntu-s-01 gunicorn[15788]:     self.reap_workers()
  Dec 15 04:22:54 ubuntu-s-01 gunicorn[15788]:   File "/home/xx/myproject/xxenv/lib/python3.6/site-packages/gunicorn/arbi
  Dec 15 04:22:54 ubuntu-s-01 gunicorn[15788]:     raise HaltServer(reason, self.WORKER_BOOT_ERROR)
  Dec 15 04:22:54 ubuntu-s-01 gunicorn[15788]: gunicorn.errors.HaltServer: &lt;HaltServer 'Worker failed to boot.' 3&gt;
  Dec 15 04:22:54 ubuntu-s-01 systemd[1]: gunicorn.service: Main process exited, code=exited, status=1/FAILURE
  Dec 15 04:22:54 ubuntu-s-01 systemd[1]: gunicorn.service: Failed with result 'exit-code'.
  </code></pre>