Can anybody help with this one, I keep getting a traceback error when I try to print or email an RFQ.

This is the error

Odoo Server Error

Traceback (most recent call last):

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/http.py", line 530, in _handle_exception

return super(JsonRequest, self)._handle_exception(exception)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/http.py", line 567, in dispatch

result = self._call_function(**self.params)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/http.py", line 303, in _call_function

return checked_call(self.db, *args, **kwargs)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/service/model.py", line 113, in wrapper

return f(dbname, *args, **kwargs)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/http.py", line 300, in checked_call

return self.endpoint(*a, **kw)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/http.py", line 796, in __call__

return self.method(*args, **kw)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/http.py", line 396, in response_wrap

response = f(*args, **kw)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/addons/web/controllers/main.py", line 940, in call_button

action = self._call_kw(model, method, args, {})

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/addons/web/controllers/main.py", line 928, in _call_kw

return getattr(request.registry.get(model), method)(request.cr, request.uid, *args, **kwargs)

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/addons/sale/sale.py", line 1193, in send_mail

return super(mail_compose_message, self).send_mail(cr, uid, ids, context=context)

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/addons/purchase/purchase.py", line 1487, in send_mail

self.pool.get('purchase.order').signal_workflow(cr, uid, [context['default_res_id']], 'send_rfq')

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/models.py", line 3543, in signal_workflow

result[res_id] = workflow.trg_validate(uid, self._name, res_id, signal, cr)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/workflow/__init__.py", line 85, in trg_validate

return WorkflowService.new(cr, uid, res_type, res_id).validate(signal)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/workflow/service.py", line 91, in validate

res2 = wi.validate(signal)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/workflow/instance.py", line 75, in validate

wi.process(signal=signal, force_running=force_running, stack=stack)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/workflow/workitem.py", line 120, in process

ok = self._split_test(activity['split_mode'], signal, stack)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/workflow/workitem.py", line 229, in _split_test

if self.wkf_expr_check(transition,signal):

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/workflow/workitem.py", line 333, in wkf_expr_check

return self.wkf_expr_eval_expr(transition['condition'])

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/workflow/workitem.py", line 291, in wkf_expr_eval_expr

result = eval(line, env, nocopy=True)

File "/opt/bitnami/apps/odoo/lib/odoo-8.0_20150423-py2.7.egg/openerp/tools/safe_eval.py", line 314, in safe_eval

return eval(c, globals_dict, locals_dict)

File "", line 1, in <module>

ValueError: "name '_has_lines' is not defined" while evaluating

u'_has_lines()'