Hi I uninstalled an addon by mistake and has caused me an internal server error , the log file reads:

2016-01-07 00:26:27,355 8253 CRITICAL bitnami_openerp openerp.service.server: Failed to initialize database `bitnami_openerp`.

Traceback (most recent call last):

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/service/server.py", line 919, in preload_registries

registry = RegistryManager.new(dbname, update_module=update_module)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/modules/registry.py", line 368, in new

openerp.modules.load_modules(registry._db, force_demo, status, update_module)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/modules/loading.py", line 357, in load_modules

registry.setup_models(cr)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/modules/registry.py", line 192, in setup_models

model._setup_fields(cr, SUPERUSER_ID)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/api.py", line 241, in wrapper

return old_api(self, *args, **kwargs)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/api.py", line 336, in old_api

result = method(recs, *args, **kwargs)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/models.py", line 2987, in _setup_fields

field.setup(self.env)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/fields.py", line 453, in setup

self._setup_related(env)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/fields.py", line 499, in _setup_related

field = recs._fields[name]

KeyError: 'formated_vat'

it would be great if you could help me please