Hi, we are unable to install or uninstall any moduel on our Odoo 10 CE running on Ubuntu 16.  We get the following error.

Odoo Server Error

Traceback (most recent call last):
  File "/odoo/odoo-server/odoo/http.py", line 642, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/odoo/odoo-server/odoo/http.py", line 684, in dispatch
    result = self._call_function(**self.params)
  File "/odoo/odoo-server/odoo/http.py", line 334, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/odoo/odoo-server/odoo/service/model.py", line 101, in wrapper
    return f(dbname, *args, **kwargs)
  File "/odoo/odoo-server/odoo/http.py", line 327, in checked_call
    result = self.endpoint(*a, **kw)
  File "/odoo/odoo-server/odoo/http.py", line 942, in __call__
    return self.method(*args, **kw)
  File "/odoo/odoo-server/odoo/http.py", line 507, in response_wrap
    response = f(*args, **kw)
  File "/odoo/odoo-server/addons/web/controllers/main.py", line 899, in call_button
    action = self._call_kw(model, method, args, {})
  File "/odoo/odoo-server/addons/web/controllers/main.py", line 887, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/odoo/odoo-server/odoo/api.py", line 689, in call_kw
    return call_kw_multi(method, model, args, kwargs)
  File "/odoo/odoo-server/odoo/api.py", line 680, in call_kw_multi
    result = method(recs, *args, **kwargs)
  File "/odoo/odoo-server/odoo/addons/base/module/module.py", line 413, in button_immediate_install
    return self._button_immediate_function(type(self).button_install)
  File "/odoo/odoo-server/odoo/addons/base/module/module.py", line 495, in _button_immediate_function
    modules.registry.Registry.new(self._cr.dbname, update_module=True)
  File "/odoo/odoo-server/odoo/modules/registry.py", line 83, in new
    odoo.modules.load_modules(registry._db, force_demo, status, update_module)
  File "/odoo/odoo-server/odoo/modules/loading.py", line 323, in load_modules
    registry.setup_models(cr, partial=True)
  File "/odoo/odoo-server/odoo/modules/registry.py", line 303, in setup_models
    model._setup_complete()
  File "/odoo/odoo-server/odoo/models.py", line 2899, in _setup_complete
    field.setup_triggers(self)
  File "/odoo/odoo-server/odoo/fields.py", line 763, in setup_triggers
    for model, field, path in self.resolve_deps(model):
  File "/odoo/odoo-server/odoo/fields.py", line 757, in resolve_deps
    result += field.resolve_deps(model, path, seen)
  File "/odoo/odoo-server/odoo/fields.py", line 737, in resolve_deps
    field = model._fields[fname]
KeyError: u'credit

We kindly request for any ideas on how to solve this.

Regards,

Austin