Client cannot login / Internal error

Hello folks,
I cannot connect anymore to seafile server from client. The rest seems ok.
Everything is uptodate on Whezzy and client.

The only relevant log is from the server (nothing from client)

[ERROR] django.request:256 handle_uncaught_exception Internal Server Error: /api2/auth-token/
Traceback (most recent call last):
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/thirdpart/Django-1.8.16-py2.7.egg/django/core/handlers/base.py", line 132, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/thirdpart/Django-1.8.16-py2.7.egg/django/views/decorators/csrf.py", line 58, in wrapped_view
    return view_func(*args, **kwargs)
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/thirdpart/Django-1.8.16-py2.7.egg/django/views/generic/base.py", line 71, in view
    return self.dispatch(request, *args, **kwargs)
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/seahub/api2/base.py", line 23, in dispatch
    response = super(APIView, self).dispatch(*a, **kw)
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/thirdpart/djangorestframework-3.3.2-py2.7.egg/rest_framework/views.py", line 466, in dispatch
    response = self.handle_exception(exc)
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/seahub/api2/base.py", line 20, in handle_exception
    return super(APIView, self).handle_exception(exc)
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/thirdpart/djangorestframework-3.3.2-py2.7.egg/rest_framework/views.py", line 463, in dispatch
    response = handler(request, *args, **kwargs)
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/seahub/api2/views.py", line 189, in post
    if serializer.is_valid():
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/thirdpart/djangorestframework-3.3.2-py2.7.egg/rest_framework/serializers.py", line 213, in is_valid
    self._validated_data = self.run_validation(self.initial_data)
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/thirdpart/djangorestframework-3.3.2-py2.7.egg/rest_framework/serializers.py", line 410, in run_validation
    value = self.validate(value)
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/seahub/api2/serializers.py", line 100, in validate
    client_version, platform_version)
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/seahub/api2/utils.py", line 501, in get_token_v2
    client_version, platform_version, get_client_ip(request))
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/seahub/api2/models.py", line 84, in get_or_create_token
    token = self._get_token_by_user_device(username, platform, device_id)
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/seahub/api2/models.py", line 77, in _get_token_by_user_device
    device_id=device_id)
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/thirdpart/Django-1.8.16-py2.7.egg/django/db/models/manager.py", line 127, in manager_method
    return getattr(self.get_queryset(), name)(*args, **kwargs)
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/thirdpart/Django-1.8.16-py2.7.egg/django/db/models/query.py", line 328, in get
    num = len(clone)
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/thirdpart/Django-1.8.16-py2.7.egg/django/db/models/query.py", line 144, in __len__
    self._fetch_all()
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/thirdpart/Django-1.8.16-py2.7.egg/django/db/models/query.py", line 965, in _fetch_all
    self._result_cache = list(self.iterator())
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/thirdpart/Django-1.8.16-py2.7.egg/django/db/models/query.py", line 238, in iterator
    results = compiler.execute_sql()
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/thirdpart/Django-1.8.16-py2.7.egg/django/db/models/sql/compiler.py", line 840, in execute_sql
    cursor.execute(sql, params)
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/thirdpart/Django-1.8.16-py2.7.egg/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/thirdpart/Django-1.8.16-py2.7.egg/django/db/utils.py", line 98, in __exit__
    six.reraise(dj_exc_type, dj_exc_value, traceback)
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/thirdpart/Django-1.8.16-py2.7.egg/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
  File "/home/seafile/haiwen/seafile-server-6.0.7/seahub/thirdpart/Django-1.8.16-py2.7.egg/django/db/backends/mysql/base.py", line 124, in execute
    return self.cursor.execute(query, args)
  File "/usr/lib/python2.7/dist-packages/MySQLdb/cursors.py", line 174, in execute
    self.errorhandler(self, exc, value)
  File "/usr/lib/python2.7/dist-packages/MySQLdb/connections.py", line 36, in defaulterrorhandler
    raise errorclass, errorvalue
OperationalError: (1054, "Unknown column 'api2_tokenv2.created_at' in 'field list'")

And here is my seahub_settings.py

SECRET_KEY = "a5d8c742-04b8-4440-8580-53a32e415f37342d"

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'seahub-db',
        'USER': 'toto',
        'PASSWORD': 'dada123',
        'HOST': '127.0.0.1',
        'PORT': '3306',
        'OPTIONS': {
            'init_command': 'SET default_storage_engine=INNODB',
        }
    }
}


CACHES = {
    'default': {
        'BACKEND': 'django_pylibmc.memcached.PyLibMCCache',
        'LOCATION': '127.0.0.1:11211',
    }
}

Do i need to put anymore details ?
thx in advance for your lights.