Odoo 9的exchange rate automatic update安裝後無法更新匯率

[az28s1356]

選擇用yahoo的 source

因為用oanda 還要申請api key 好像是要付費所以捨棄

可是按下更新匯率都會錯誤..

跳出

Odoo Server Error
Traceback (most recent call last):
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server.\openerp\http.py", line 643, in _handle_exception
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server.\openerp\http.py", line 680, in dispatch
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server.\openerp\http.py", line 316, in _call_function
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server.\openerp\service\model.py", line 118, in wrapper
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server.\openerp\http.py", line 309, in checked_call
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server.\openerp\http.py", line 959, in call
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server.\openerp\http.py", line 509, in response_wrap
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server\openerp\addons\web\controllers\main.py", line 896, in call_button
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server\openerp\addons\web\controllers\main.py", line 884, in _call_kw
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server.\openerp\api.py", line 250, in wrapper
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server.\openerp\api.py", line 421, in old_api
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server.\openerp\api.py", line 425, in new_api
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server\openerp\addons\exchange_rate_update\models\res_company.py", line 41, in button_update_rate
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server.\openerp\api.py", line 248, in wrapper
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server.\openerp\api.py", line 425, in new_api
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server\openerp\addons\exchange_rate_update\models\res_company.py", line 59, in save_new_rates
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server.\openerp\api.py", line 248, in wrapper
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server.\openerp\models.py", line 4150, in create
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server.\openerp\api.py", line 248, in wrapper
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server.\openerp\api.py", line 490, in new_api
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server.\openerp\models.py", line 4249, in _create
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server.\openerp\osv\fields.py", line 388, in <lambda>
  File "C:\Program Files (x86)\Odoo 9.0-20160420\server.\openerp\osv\fields.py", line 362, in _symbol_set_float
ValueError: could not convert string to float: N/A

求各位大神幫忙