Odoo Server Error

Traceback (most recent call last):
  File "/opt/odoo86/odoo86/openerp/http.py", line 537, in _handle_exception
    return super(JsonRequest, self)._handle_exception(exception)
  File "/opt/odoo86/odoo86/openerp/http.py", line 574, in dispatch
    result = self._call_function(**self.params)
  File "/opt/odoo86/odoo86/openerp/http.py", line 310, in _call_function
    return checked_call(self.db, *args, **kwargs)
  File "/opt/odoo86/odoo86/openerp/service/model.py", line 113, in wrapper
    return f(dbname, *args, **kwargs)
  File "/opt/odoo86/odoo86/openerp/http.py", line 307, in checked_call
    return self.endpoint(*a, **kw)
  File "/opt/odoo86/odoo86/openerp/http.py", line 803, in __call__
    return self.method(*args, **kw)
  File "/opt/odoo86/odoo86/openerp/http.py", line 403, in response_wrap
    response = f(*args, **kw)
  File "/opt/odoo86/odoo86/openerp/addons/web/controllers/main.py", line 944, in call_kw
    return self._call_kw(model, method, args, kwargs)
  File "/opt/odoo86/odoo86/openerp/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/odoo86/odoo86/openerp/api.py", line 241, in wrapper
    return old_api(self, *args, **kwargs)
  File "/opt/odoo86/odoo86/openerp/addons/auth_signup/res_users.py", line 306, in create
    self.action_reset_password(cr, uid, [\user.id], context=context)
  File "/opt/odoo86/odoo86/openerp/api.py", line 241, in wrapper
    return old_api(self, *args, **kwargs)
  File "/opt/odoo86/odoo86/openerp/addons/auth_signup/res_users.py", line 295, in action_reset_password
    self.pool.get('email.template').send_mail(cr, uid, template.id, \user.id, force_send=True, raise_exception=True, context=context)
  File "/opt/odoo86/odoo86/openerp/api.py", line 241, in wrapper
    return old_api(self, *args, **kwargs)
  File "/opt/odoo86/odoo86/openerp/addons/email_template/email_template.py", line 575, in send_mail
    mail_mail.send(cr, uid, [msg_id], raise_exception=raise_exception, context=context)
  File "/opt/odoo86/odoo86/openerp/api.py", line 241, in wrapper
    return old_api(self, *args, **kwargs)
TypeError: send() got an unexpected keyword argument 'raise_exception'

How to fix this?

Could any one please help me.