I am using Joomla 3.0 for my site
Last month, I have submitted my site to google using Google Web Master Tools
Last week I installed category listing plugin called 'DM Pinboard'.
Because of this plugin, all the articles which under the categories, changed its URL.
So in google, already indexed old articles. When user click a link in SERP displaying the following error. 500 - View not found [name, type, prefix]: pb, html, pbView! enter image description here
I think I have to inform Google, that I have changed my URLs.
I don't know how to inform it. Please help me to solve this problem