An Update to Support PHP 7?

Hello,

I need to upgrade to PHP 7 but when I checked my active plugins, I got this warning:

“/wp-content/plugins/popup-maker/includes/libs/browser.php
—————————————————————————————————————-
FOUND 0 ERRORS AND 1 WARNING AFFECTING 1 LINE
—————————————————————————————————————-
225 | WARNING | Use of deprecated PHP4 style class constructor is not supported since PHP 7.
—————————————————————————————————————-”

Is there a way to fix it so I can finally upgrade my PHP?

Thanks!