Error:
Odoo Server Error

Traceback (most recent call last):
  File "/home/odoo/src/odoo/odoo/http.py", line 656, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/home/odoo/src/odoo/odoo/http.py", line 314, in _handle_exception
    raise pycompat.reraise(type(exception), exception, sys.exc_info()[2])
  File "/home/odoo/src/odoo/odoo/tools/pycompat.py", line 87, in reraise
    raise value
  File "/home/odoo/src/odoo/odoo/http.py", line 698, in dispatch
    result = self._call_function(**self.params)
  File "/home/odoo/src/odoo/odoo/http.py", line 346, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/home/odoo/src/odoo/odoo/service/model.py", line 97, in wrapper
    return f(dbname, *args, **kwargs)
  File "/home/odoo/src/odoo/odoo/http.py", line 339, in checked_call
    result = self.endpoint(*a, **kw)
  File "/home/odoo/src/odoo/odoo/http.py", line 941, in __call__
    return self.method(*args, **kw)
  File "/home/odoo/src/odoo/odoo/http.py", line 519, in response_wrap
    response = f(*args, **kw)
  File "/home/odoo/src/odoo/addons/web/controllers/main.py", line 966, in call_button
    action = self._call_kw(model, method, args, {})
  File "/home/odoo/src/odoo/addons/web/controllers/main.py", line 954, in _call_kw
    return call_kw(request.env[model], method, args, kwargs)
  File "/home/odoo/src/odoo/odoo/api.py", line 759, in call_kw
    return _call_kw_multi(method, model, args, kwargs)
  File "/home/odoo/src/odoo/odoo/api.py", line 746, in _call_kw_multi
    result = method(recs, *args, **kwargs)
  File "/home/odoo/src/odoo/addons/crm/wizard/crm_lead_to_opportunity.py", line 143, in action_apply
    self._convert_opportunity(values)
  File "/home/odoo/src/user/presales_workflow/models/crm.py", line 30, in _convert_opportunity
    return super(Lead2OpportunityPartner, self)._convert_opportunity(vals)
  File "/home/odoo/src/odoo/addons/crm/wizard/crm_lead_to_opportunity.py", line 103, in _convert_opportunity
    lead.id, self.action, vals.get('partner_id') or lead.partner_id.id)
  File "/home/odoo/src/odoo/addons/crm/wizard/crm_lead_to_opportunity.py", line 157, in _create_partner
    result = self.env['crm.lead'].browse(lead_id).handle_partner_assignation(action, partner_id)
  File "/home/odoo/src/odoo/addons/crm/models/crm_lead.py", line 868, in handle_partner_assignation
    partner = lead._create_lead_partner()
  File "/home/odoo/src/odoo/addons/crm/models/crm_lead.py", line 843, in _create_lead_partner
    return Partner.create(self._create_lead_partner_data(contact_name, False, partner_company.id if partner_company else False))
  File "/home/odoo/src/user/presales_workflow/models/crm.py", line 78, in _create_lead_partner_data
    email_split = tools.email_split(self.email_from)
NameError: name 'tools' is not defined