i am developing a new module name machinery from an existing module fleet. i got this error

OpenERP Server Error

Client Traceback (most recent call last): File "/opt/openerp/server/openerp/addons/web/http.py", line 204, in dispatch response["result"] = method(self, **self.params) File "/opt/openerp/server/openerp/addons/web/controllers/main.py", line 1129, in call_button action = self._call_kw(req, model, method, args, {}) File "/opt/openerp/server/openerp/addons/web/controllers/main.py", line 1117, in _call_kw return getattr(req.session.model(model), method)(*args, **kwargs) File "/opt/openerp/server/openerp/addons/web/session.py", line 42, in proxy result = self.proxy.execute_kw(self.session._db, self.session._uid, self.session._password, self.model, method, args, kw) File "/opt/openerp/server/openerp/addons/web/session.py", line 30, in proxy_method result = self.session.send(self.service_name, method, *args) File "/opt/openerp/server/openerp/addons/web/session.py", line 103, in send raise xmlrpclib.Fault(openerp.tools.ustr(e), formatted_info) Server Traceback (most recent call last): File "/opt/openerp/server/openerp/addons/web/session.py", line 89, in send return openerp.netsvc.dispatch_rpc(service_name, method, args) File "/opt/openerp/server/openerp/netsvc.py", line 292, in dispatch_rpc result = ExportService.getService(service_name).dispatch(method, params) File "/opt/openerp/server/openerp/service/web_services.py", line 626, in dispatch res = fn(db, uid, *params) File "/opt/openerp/server/openerp/osv/osv.py", line 190, in execute_kw return self.execute(db, uid, obj, method, *args, **kw or {}) File "/opt/openerp/server/openerp/osv/osv.py", line 132, in wrapper return f(self, dbname, *args, **kwargs) File "/opt/openerp/server/openerp/osv/osv.py", line 199, in execute res = self.execute_cr(cr, uid, obj, method, *args, **kw) File "/opt/openerp/server/openerp/osv/osv.py", line 187, in execute_cr return getattr(object, method)(cr, uid, *args, **kw) File "/opt/openerp/server/openerp/addons/base/module/module.py", line 424, in button_immediate_install return self._button_immediate_function(cr, uid, ids, self.button_install, context=context) File "/opt/openerp/server/openerp/addons/base/module/module.py", line 475, in _button_immediate_function _, pool = pooler.restart_pool(cr.dbname, update_module=True) File "/opt/openerp/server/openerp/pooler.py", line 39, in restart_pool registry = RegistryManager.new(db_name, force_demo, status, update_module) File "/opt/openerp/server/openerp/modules/registry.py", line 233, in new openerp.modules.load_modules(registry.db, force_demo, status, update_module) File "/opt/openerp/server/openerp/modules/loading.py", line 354, in load_modules loaded_modules, update_module) File "/opt/openerp/server/openerp/modules/loading.py", line 256, 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/server/openerp/modules/loading.py", line 188, in load_module_graph load_data(module_name, idref, mode) File "/opt/openerp/server/openerp/modules/loading.py", line 76, in <lambda> load_data = lambda *args: _load_data(cr, *args, kind='data') File "/opt/openerp/server/openerp/modules/loading.py", line 124, in _load_data tools.convert_xml_import(cr, module_name, fp, idref, mode, noupdate, report) File "/opt/openerp/server/openerp/tools/convert.py", line 954, in convert_xml_import obj.parse(doc.getroot()) File "/opt/openerp/server/openerp/tools/convert.py", line 847, in parse self._tags[rec.tag](self.cr, rec, n) File "/opt/openerp/server/openerp/tools/convert.py", line 807, in _tag_record f_val = _eval_xml(self,field, self.pool, cr, self.uid, self.idref) File "/opt/openerp/server/openerp/tools/convert.py", line 139, in _eval_xml return unsafe_eval(a_eval, idref2) File "<string>", line 1, in <module> File "/opt/openerp/server/openerp/tools/convert.py", line 73, in <lambda> return lambda x: self.id_get(cr, x) File "/opt/openerp/server/openerp/tools/convert.py", line 824, in id_get res = self.model_id_get(cr, id_str) File "/opt/openerp/server/openerp/tools/convert.py", line 833, in model_id_get return model_data_obj.get_object_reference(cr, self.uid, mod, id_str) File "/opt/openerp/server/openerp/tools/cache. py", line 18, in lookup r = self.lookup(self2, cr, *args) File "/opt/openerp/server/openerp/tools/cache.py", line 46, in lookup value = d[key] = self.method(self2, cr, *args) File "/opt/openerp/server/openerp/addons/base/ir/ir_model.py", line 872, in get_object_reference data_id = self._get_id(cr, uid, module, xml_id) File "/opt/openerp/server/openerp/tools/cache.py", line 18, in lookup r = self.lookup(self2, cr, *args) File "/opt/openerp/server/openerp/tools/cache.py", line 46, in lookup value = d[key] = self.method(self2, cr, *args) File "/opt/openerp/server/openerp/addons/base/ir/ir_model.py", line 865, in _get_id raise ValueError('No such external ID currently defined in the system: %s.%s' % (module, xml_id)) ValueError: No such external ID currently defined in the system: fleet.menu_root

i dont know where is the module name (fleet) written please help me how to fix this error