[view article 404 not found] following the exact steps in the document

[eluser][email protected][/eluser]
[view article 404 not found] following the exact steps in the document
I am new CI user. I just followed through the documentation of CI to make the news pages.
I am up to the page of ‘user_guide/tutorial/news_section.html’
However, when I test the page when I click “view Article” button on the view page (I think), the 404 not found error pops up for all the articles.
Does anyone know why is it happening and How to fix it? Or how to troble shoot it in this situation.

Thank you very much!

[eluser]Eduard Stankovic[/eluser]
post here code of your view