How to add unanswered questions list to sidebar

To resolve this issue, you can create a widget for the Unanswered question. 
1- Go to the themes/your-theme folder, create a folder named “dwqa-templates”
2- Create a .php file, named “unanswered_Question.php”
3- Go to the plugins/dw-question-answer folder. Open the “dw-question-answer.php” file.
4- Add the following code under line 133: 

require_once DWQA_DIR . 'inc/widgets/unanswered_Question.php';

and the following code under line 145: 

'DWQA_Widgets_unanswered_Question',