php 7.2 warning on main page

• Ask a couple of questions
• View the main page
• The following warning appears for each question:
  Warning: count(): Parameter must be an array or an object that implements Countable in /var/www/html/qa-include/app/format.php on line 383

PHP Version 7.2.6

[svivian]

Thanks for the contribution. This was already fixed by another PR.