[2017-07-25 12:48:02 +0200] [14365] [INFO] Starting gunicorn 19.7.1
[2017-07-25 12:48:02 +0200] [14365] [INFO] Listening at: http://0.0.0.0:7000 (14365)
[2017-07-25 12:48:02 +0200] [14365] [INFO] Using worker: sync
[2017-07-25 12:48:02 +0200] [14368] [INFO] Booting worker with pid: 14368
[2017-07-25 12:48:02 +0200] [14368] [ERROR] Exception in worker process
Traceback (most recent call last):
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/arbiter.py", line 578, in spawn_worker
    worker.init_process()
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/workers/base.py", line 126, in init_process
    self.load_wsgi()
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/workers/base.py", line 135, in load_wsgi
    self.wsgi = self.app.wsgi()
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/app/base.py", line 67, in wsgi
    self.callable = self.load()
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/app/wsgiapp.py", line 65, in load
    return self.load_wsgiapp()
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/app/wsgiapp.py", line 52, in load_wsgiapp
    return util.import_app(self.app_uri)
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/util.py", line 352, in import_app
    __import__(module)
  File "/home/valentin/apis/lib/python3.5/site-packages/api_dnl/__init__.py", line 2, in <module>
    from . import settings
  File "/home/valentin/apis/lib/python3.5/site-packages/api_dnl/settings.py", line 11, in <module>
    raise EnvironmentError(err)
OSError: LOG_FILE environment variable is not set, all required variables: ['LOG_FILE', 'LOG_LEVEL', 'API_BASE_PATH', 'DB_CONN_STRING', 'JWT_SIGNATURE']
[2017-07-25 12:48:02 +0200] [14368] [INFO] Worker exiting (pid: 14368)
[2017-07-25 12:48:02 +0200] [14371] [INFO] Booting worker with pid: 14371
[2017-07-25 12:48:02 +0200] [14371] [ERROR] Exception in worker process
Traceback (most recent call last):
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/arbiter.py", line 578, in spawn_worker
    worker.init_process()
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/workers/base.py", line 126, in init_process
    self.load_wsgi()
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/workers/base.py", line 135, in load_wsgi
    self.wsgi = self.app.wsgi()
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/app/base.py", line 67, in wsgi
    self.callable = self.load()
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/app/wsgiapp.py", line 65, in load
    return self.load_wsgiapp()
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/app/wsgiapp.py", line 52, in load_wsgiapp
    return util.import_app(self.app_uri)
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/util.py", line 352, in import_app
    __import__(module)
  File "/home/valentin/apis/lib/python3.5/site-packages/api_dnl/__init__.py", line 2, in <module>
    from . import settings
  File "/home/valentin/apis/lib/python3.5/site-packages/api_dnl/settings.py", line 11, in <module>
    raise EnvironmentError(err)
OSError: LOG_FILE environment variable is not set, all required variables: ['LOG_FILE', 'LOG_LEVEL', 'API_BASE_PATH', 'DB_CONN_STRING', 'JWT_SIGNATURE']
[2017-07-25 12:48:02 +0200] [14371] [INFO] Worker exiting (pid: 14371)
Traceback (most recent call last):
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/arbiter.py", line 202, in run
    self.manage_workers()
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/arbiter.py", line 544, in manage_workers
    self.spawn_workers()
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/arbiter.py", line 612, in spawn_workers
    time.sleep(0.1 * random.random())
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/arbiter.py", line 244, in handle_chld
    self.reap_workers()
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/arbiter.py", line 524, in reap_workers
    raise HaltServer(reason, self.WORKER_BOOT_ERROR)
gunicorn.errors.HaltServer: <HaltServer 'Worker failed to boot.' 3>

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/valentin/apis/bin/gunicorn", line 11, in <module>
    sys.exit(run())
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/app/wsgiapp.py", line 74, in run
    WSGIApplication("%(prog)s [OPTIONS] [APP_MODULE]").run()
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/app/base.py", line 203, in run
    super(Application, self).run()
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/app/base.py", line 72, in run
    Arbiter(self).run()
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/arbiter.py", line 231, in run
    self.halt(reason=inst.reason, exit_status=inst.exit_status)
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/arbiter.py", line 344, in halt
    self.stop()
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/arbiter.py", line 393, in stop
    time.sleep(0.1)
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/arbiter.py", line 244, in handle_chld
    self.reap_workers()
  File "/home/valentin/apis/lib/python3.5/site-packages/gunicorn/arbiter.py", line 524, in reap_workers
    raise HaltServer(reason, self.WORKER_BOOT_ERROR)
gunicorn.errors.HaltServer: <HaltServer 'Worker failed to boot.' 3>