Hi , if you have viewed my previous blog on ,

Install Odoo V9.0 with Nodejs on Ubuntu 14.04

then when you have installed it , running v9.0 well , happy and then when you test e-commerce payment … something strange happened , you stuck at Pay Now and can’t proceed further …

 

and the odoo log file show … IOError
then this may because you have changed the odoo default port 8069 to something else , so you must go to setting , system parameter ( you must activate developer mode ) , so that you can find this … and create a record as follow , add a parameter key report_url with value http://127.0.0.1:9099(your odoo v9.0. port)
and then retry the Pay Now, it should be able to proceed through payment already !
So Malaysia / Singapore SME , happy Odooing !