To reproduce:

In community edition

• Install Avalara Avatax Connector
  

• Do not configure, just uninstall it.

• Create a quote

• Convert to Sales Order

• Generate Invoice

• Click on Validate Invoice
  

Now Odoo complaints with the following traceback:

Odoo Server ErrorTraceback (most recent call last): File "/opt/odoo/odoo-server/openerp/http.py", line 643, in _handle_exception return super(JsonRequest, self)._handle_exception(exception) File "/opt/odoo/odoo-server/openerp/http.py", line 680, in dispatch result = self._call_function(**self.params) File "/opt/odoo/odoo-server/openerp/http.py", line 316, in _call_function return checked_call(self.db, *args, **kwargs) File "/opt/odoo/odoo-server/openerp/service/model.py", line 118, in wrapper return f(dbname, *args, **kwargs) File "/opt/odoo/odoo-server/openerp/http.py", line 309, in checked_call result = self.endpoint(*a, **kw) File "/opt/odoo/odoo-server/openerp/http.py", line 959, in __call__ return self.method(*args, **kw) File "/opt/odoo/odoo-server/openerp/http.py", line 509, in response_wrap response = f(*args, **kw) File "/home/opt/odoo-9.0/addons/web/controllers/main.py", line 903, in exec_workflow return request.session.exec_workflow(model, id, signal) File "/opt/odoo/odoo-server/openerp/http.py", line 1267, in exec_workflow r = self.proxy('object').exec_workflow(self.db, self.uid, self.password, model, signal, id) File "/opt/odoo/odoo-server/openerp/http.py", line 1035, in proxy_method result = dispatch_rpc(self.service_name, method, args) File "/opt/odoo/odoo-server/openerp/http.py", line 114, in dispatch_rpc result = dispatch(method, params) File "/opt/odoo/odoo-server/openerp/service/model.py", line 37, in dispatch res = fn(db, uid, *params) File "/opt/odoo/odoo-server/openerp/service/model.py", line 118, in wrapper return f(dbname, *args, **kwargs) File "/opt/odoo/odoo-server/openerp/service/model.py", line 194, in exec_workflow return exec_workflow_cr(cr, uid, obj, signal, *args) File "/opt/odoo/odoo-server/openerp/service/model.py", line 188, in exec_workflow_cr return execute_cr(cr, uid, obj, 'signal_workflow', [res_id], signal)[res_id] File "/opt/odoo/odoo-server/openerp/service/model.py", line 170, in execute_cr return getattr(object, method)(cr, uid, *args, **kw) File "/opt/odoo/odoo-server/openerp/api.py", line 250, in wrapper return old_api(self, *args, **kwargs) File "/opt/odoo/odoo-server/openerp/models.py", line 3617, in signal_workflow result[res_id] = workflow.trg_validate(uid, self._name, res_id, signal, cr) File "/opt/odoo/odoo-server/openerp/workflow/__init__.py", line 67, in trg_validate return WorkflowService.new(cr, uid, res_type, res_id).validate(signal) File "/opt/odoo/odoo-server/openerp/workflow/service.py", line 73, in validate res2 = wi.validate(signal) File "/opt/odoo/odoo-server/openerp/workflow/instance.py", line 62, in validate wi.process(signal=signal, force_running=force_running, stack=stack) File "/opt/odoo/odoo-server/openerp/workflow/workitem.py", line 102, in process ok = self._split_test(activity['split_mode'], signal, stack) File "/opt/odoo/odoo-server/openerp/workflow/workitem.py", line 230, in _split_test self._join_test(t[0], t[1], stack) File "/opt/odoo/odoo-server/openerp/workflow/workitem.py", line 239, in _join_test WorkflowItem.create(self.session, self.record, activity, inst_id, stack=stack) File "/opt/odoo/odoo-server/openerp/workflow/workitem.py", line 77, in create workflow_item.process(stack=stack) File "/opt/odoo/odoo-server/openerp/workflow/workitem.py", line 98, in process if not self._execute(activity, stack): File "/opt/odoo/odoo-server/openerp/workflow/workitem.py", line 144, in _execute returned_action = self.wkf_expr_execute(activity) File "/opt/odoo/odoo-server/openerp/workflow/workitem.py", line 295, in wkf_expr_execute return self.wkf_expr_eval_expr(activity['action']) File "/opt/odoo/odoo-server/openerp/workflow/workitem.py", line 273, in wkf_expr_eval_expr result = eval(line, env, nocopy=True) File "/opt/odoo/odoo-server/openerp/tools/safe_eval.py", line 298, in safe_eval return eval(c, globals_dict, locals_dict) File "", line 1, in <module>ValueError: "name 'action_commit_tax' is not defined" while evaluatingu'action_commit_tax()'

Ideas? I'm out of them.