when i use http://localhost:8069/web/database/manager and want to backup the database,an error happened like this
2016-01-27 15:44:41,303 76936 ERROR ? openerp.addons.web.controllers.main: Database.backup
Traceback (most recent call last):
File "D:\git\odoo9\addons\web\controllers\main.py", line 693, in backup
('Content-Disposition', content_disposition(filename)),
File "D:\git\odoo9\addons\web\controllers\main.py", line 422, in content_disposition
return request.registry['ir.http'].content_disposition(filename)
TypeError: 'NoneType' object has no attribute '__getitem__'
2016-01-27 15:44:41,839 76936 INFO ? werkzeug: 127.0.0.1 - - [27/Jan/2016 15:44:41] "POST /web/database/backup HTTP/1.1" 200 -