Stop_raid Error

Environment:


Request Method: GET
Request URL: http://www.fjarr.com/hosting/stop_raid/

Django Version: 1.8.5
Python Version: 2.7.8
Installed Applications:
('django_admin_bootstrapped',
 'django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.humanize',
 'django_extensions',
 'mysite.apps.hosting',
 'mysite.apps.channels',
 'mysite.apps.blog',
 'bootstrapform',
 'django_markdown',
 'mysite.apps.affiliates',
 'mysite.apps.analytics',
 'social.apps.django_app.default',
 'djkombu')
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware')


Traceback:
File "/var/lib/openshift/550736055973cad869000119/python/virtenv/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  132.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/var/lib/openshift/550736055973cad869000119/python/virtenv/lib/python2.7/site-packages/django/views/generic/base.py" in view
  71.             return self.dispatch(request, *args, **kwargs)
File "/var/lib/openshift/550736055973cad869000119/python/virtenv/lib/python2.7/site-packages/django/views/generic/base.py" in dispatch
  89.         return handler(request, *args, **kwargs)
File "/var/lib/openshift/550736055973cad869000119/app-root/runtime/repo/mysite/apps/hosting/views.py" in get
  337.         fjarr.stop_host(setting.user)
File "/var/lib/openshift/550736055973cad869000119/app-root/runtime/repo/mysite/apps/hosting/fjarrbot.py" in stop_host
  108.                 bytes('PRIVMSG %s :%s\r\n' % (CHAN, "/unhost " + self.CHAN_HOST))

Exception Type: TypeError at /hosting/stop_raid/
Exception Value: cannot concatenate 'str' and 'NoneType' objects