# Pastebin LFuENNM0
ov 26 10:32:48 ubuntu devstack@keystone.service[17657]: DEBUG keystone.notifications [-] Callback: `keystone.revoke.core.Manager._user_callback` subscribed to event `identity.user.disabled`. {{(pid=17662) register_event_callback /opt/stack/keystone/keystone/notifications.py:286}}
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: DEBUG keystone.notifications [-] Callback: `keystone.revoke.core.Manager._user_callback` subscribed to event `identity.persist_revocation_event_for_user.internal`. {{(pid=17662) register_event_callback /opt/stack/keystone/keystone/notifications.py:286}}
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: WARNING stevedore.named [-] Could not load fernet
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: CRITICAL keystone [-] Unhandled error: ImportError: Unable to find 'fernet' driver in 'keystone.receipt.provider'.
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone Traceback (most recent call last):
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone   File "/usr/local/bin/keystone-wsgi-public", line 52, in <module>
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone     application = initialize_public_application()
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone   File "/opt/stack/keystone/keystone/server/wsgi.py", line 24, in initialize_public_application
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone     name='public', config_files=flask_core._get_config_files())
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone   File "/opt/stack/keystone/keystone/server/flask/core.py", line 174, in initialize_application
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone     startup_application_fn=loadapp)
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone   File "/opt/stack/keystone/keystone/server/__init__.py", line 46, in setup_backends
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone     drivers = backends.load_backends()
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone   File "/opt/stack/keystone/keystone/server/backends.py", line 62, in load_backends
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone     drivers = {d._provides_api: d() for d in managers}
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone   File "/opt/stack/keystone/keystone/server/backends.py", line 62, in <dictcomp>
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone     drivers = {d._provides_api: d() for d in managers}
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone   File "/opt/stack/keystone/keystone/receipt/provider.py", line 70, in __init__
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone     super(Manager, self).__init__(CONF.receipt.provider)
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone   File "/opt/stack/keystone/keystone/common/manager.py", line 181, in __init__
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone     self.driver = load_driver(self.driver_namespace, driver_name)
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone   File "/opt/stack/keystone/keystone/common/manager.py", line 81, in load_driver
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone     raise ImportError(msg % {'name': driver_name, 'namespace': namespace})
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone ImportError: Unable to find 'fernet' driver in 'keystone.receipt.provider'.
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: ERROR keystone 
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: unable to load app 0 (mountpoint='') (callable not found or import error)
Nov 26 10:32:48 ubuntu devstack@keystone.service[17657]: *** no app loaded. going in full dynamic mode ***