Hello guys, I am trying ti build a widget. but after making a base for it and trying to display, I get the error in the title.

I have my widget in <plugin>/components/latest_articles_widget.php
the contents are

class EMARTICLES_CMP_LatestArticlesWidget extends BASE_CLASS_Widget 
{

public function __construct( BASE_CLASS_WidgetParameter $paramObj )
{
$this->assign('hello', 'hi');
}

};

and in <plugin>/views/components/latest_articles_widget.html
I have a few words.
Am I missing something? I can't find my error.
Please help.