phpwee PHP versions?

[Abe2021]

I'm trying out phpwee for the first time, and using it in a PHP7.4.16 and I get the following error:

<b>Deprecated</b>: The each() function is deprecated. This message will be suppressed on further calls in <b>/var/www/vhosts/local........com/httpdocs/vendor/phpwee-php-minifier-master/src/CssMin/CssMin.php</b> on line <b>2223</b><br />

perhaps either the home page needs to qualify which version of PHP phpwee works against, or can this be fixed?

Thanks
Abe