Odoo Server Error

Traceback (most recent call last):
  File "/opt/openerp/v8/openerp/http.py", line 537, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/opt/openerp/v8/openerp/http.py", line 574, in dispatch
    result = self._call_function(**self.params)
  File "/opt/openerp/v8/openerp/http.py", line 310, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/opt/openerp/v8/openerp/service/model.py", line 113, in wrapper
    return f(dbname, *args, **kwargs)
  File "/opt/openerp/v8/openerp/http.py", line 307, in checked_call
    return self.endpoint(*a, **kw)
  File "/opt/openerp/v8/openerp/http.py", line 803, in __call__
    return self.method(*args, **kw)
  File "/opt/openerp/v8/openerp/http.py", line 403, in response_wrap
    response = f(*args, **kw)
  File "/opt/openerp/v8/addons/web/controllers/main.py", line 948, in call_button
    action = self._call_kw(model, method, args, {})
  File "/opt/openerp/v8/addons/web/controllers/main.py", line 936, in _call_kw
    return getattr(request.registry.get(model), method)(request.cr, request.uid, *args, **kwargs)
  File "/opt/openerp/v8/openerp/api.py", line 241, in wrapper
    return old_api(self, *args, **kwargs)
  File "/opt/openerp/v8/openerp/addons/base/module/module.py", line 446, in button_immediate_install
    return self._button_immediate_function(cr, uid, ids, self.button_install, context=context)
  File "/opt/openerp/v8/openerp/api.py", line 241, in wrapper
    return old_api(self, *args, **kwargs)
  File "/opt/openerp/v8/openerp/addons/base/module/module.py", line 494, in _button_immediate_function
    registry = openerp.modules.registry.RegistryManager.new(cr.dbname, update_module=True)
  File "/opt/openerp/v8/openerp/modules/registry.py", line 370, in new
    openerp.modules.load_modules(registry._db, force_demo, status, update_module)
  File "/opt/openerp/v8/openerp/modules/loading.py", line 355, in load_modules
    loaded_modules, update_module)
  File "/opt/openerp/v8/openerp/modules/loading.py", line 255, in load_marked_modules
    loaded, processed = load_module_graph(cr, graph, progressdict, report=report, skip_modules=loaded_modules, perform_checks=perform_checks)
  File "/opt/openerp/v8/openerp/modules/loading.py", line 176, in load_module_graph
    _load_data(cr, module_name, idref, mode, kind='data')
  File "/opt/openerp/v8/openerp/modules/loading.py", line 118, in _load_data
    tools.convert_file(cr, module_name, filename, idref, mode, noupdate, kind, report)
  File "/opt/openerp/v8/openerp/tools/convert.py", line 901, in convert_file
    convert_xml_import(cr, module, fp, idref, mode, noupdate, report)
  File "/opt/openerp/v8/openerp/tools/convert.py", line 987, in convert_xml_import
    obj.parse(doc.getroot(), mode=mode)
  File "/opt/openerp/v8/openerp/tools/convert.py", line 853, in parse
    self._tags[rec.tag](self.cr, rec, n, mode=mode)
  File "/opt/openerp/v8/openerp/tools/convert.py", line 763, in _tag_record
    id = self.pool['ir.model.data']._update(cr, self.uid, rec_model, self.module, res, rec_id or False, not self.isnoupdate(data_node), noupdate=self.isnoupdate(data_node), mode=self.mode, context=rec_context )
  File "/opt/openerp/v8/openerp/api.py", line 241, in wrapper
    return old_api(self, *args, **kwargs)
  File "/opt/openerp/v8/openerp/addons/base/ir/ir_model.py", line 1077, in _update
    res_id = model_obj.create(cr, uid, values, context=context)
  File "/opt/openerp/v8/openerp/api.py", line 241, in wrapper
    return old_api(self, *args, **kwargs)
  File "/opt/openerp/v8/openerp/addons/base/ir/ir_ui_view.py", line 264, in create
    context=context)
  File "/opt/openerp/v8/openerp/api.py", line 241, in wrapper
    return old_api(self, *args, **kwargs)
  File "/opt/openerp/v8/openerp/api.py", line 336, in old_api
    result = method(recs, *args, **kwargs)
  File "/opt/openerp/v8/openerp/models.py", line 4076, in create
    record = self.browse(self._create(old_vals))
  File "/opt/openerp/v8/openerp/api.py", line 239, in wrapper
    return new_api(self, *args, **kwargs)
  File "/opt/openerp/v8/openerp/api.py", line 463, in new_api
    result = method(self._model, cr, uid, *args, **kwargs)
  File "/opt/openerp/v8/openerp/models.py", line 4267, in _create
    recs._validate_fields(vals)
  File "/opt/openerp/v8/openerp/api.py", line 239, in wrapper
    return new_api(self, *args, **kwargs)
  File "/opt/openerp/v8/openerp/models.py", line 1271, in _validate_fields
    raise ValidationError('\n'.join(errors))
ParseError: "ValidateError
Field(s) `arch` failed against a constraint: Invalid view definition

Error details:
Field `state` does not exist

Error context:
View `reformat_all_phonenumbers.form`
[view_id: 1499, xml_id: n/a, model: reformat.all.phonenumbers, parent_id: n/a]" while parsing /opt/openerp/v8/addons-community/base_phone/wizard/reformat_all_phonenumbers_view.xml:11, near
<record id="reformat_all_phonenumbers_form" model="ir.ui.view">
    <field name="name">reformat_all_phonenumbers.form</field>
    <field name="model">reformat.all.phonenumbers</field>
    <field name="arch" type="xml">
        <form string="Reformat all phone numbers">
            <group name="main">
                <label string="This wizard reformats the phone, mobile and fax numbers of all partners in standard international format e.g. +33141981242" colspan="2" states="draft"/>
                <label colspan="2" string="Phone numbers that couldn't be reformatted:" states="done"/>
                <field name="phonenumbers_not_reformatted" colspan="2" nolabel="1" states="done"/>
                <field name="state" invisible="1"/>
            </group>
            <footer>
                <button name="run_reformat_all_phonenumbers" string="Reformat all phone numbers" type="object" class="oe_highlight" states="draft"/>
                <button name="action_next" type="object" string="Close" class="oe_highlight" states="done"/>
                <button special="cancel" string="Cancel" class="oe_link" states="draft"/>
            </footer>
        </form>
    </field>
</record>