PHP 7.2 update issue

Warning: count(): Parameter must be an array or an object that implements Countable in C:\xampp\htdocs\wordpressweb\wp-content\plugins\dw-question-answer\inc\Status.php on line 247

Good afternoon DWQA team, I would like to thank you for creating this extraordinary plugin. The features are the best and it cannot be compared to other Q&A plugins. However, I need your help, I have been testing your plugin in my local site, when suddenly right after I updated my PHP version to 7.2, the error occurs every time I click on page where the list of questions can be found. It did not really affect the function of my local site but in the front end you can directly see the error(warning notice above). Please help me. How can I fix this problem? Thank you in advance.

The page I need help with: [log in to see the link]