Folio - PHP Warning

White trying to resolve my other issue, I looked in the error log and it shows the following error many times since I installed Folio:

[10-Feb-2019 20:47:35 UTC] PHP Warning: count(): Parameter must be an array or an object that implements Countable in /home/vanityla/public_html/templates/jp-folio/roksprocket/layouts/mosaic/themes/popup/index.php on line 19

Is there, by chance, a fix?

It is only a warning and will be fixed in the next version of PHP and roksprocket.
Switch back to PHP 7.1 and the warning is gone