Error notice appearing above contact form

Hi,

The following error is appearing above my contact forms:

Notice: A non well formed numeric value encountered in /home/jadedlioness/geeking-by.net/wp-content/plugins/contact-forms-builder/functions.php on line 1407

It’s appearing on different forms on separate pages:
https://geeking-by.net/site/contact-me/
https://geeking-by.net/reviews/request-a-review/
https://geeking-by.net/reviews/guest-posts/

Upon checking the code myself line 1407 in functions.php is part of the following segment:

// return bytes from mega, giga, or kilos
function wpda_form_return_bytes($val) {
    $val = trim($val);
    $last = strtolower($val[strlen($val)-1]);
    switch($last) {
        // The 'G' modifier is available since PHP 5.1.0
        case 'g':
            $val *= 1024;
        case 'm':
       //line 1407//     $val *= 1024;
        case 'k':
            $val *= 1024;
    }

(Please note ” //line 1407// ” is not part of the code and has just been added to show you the line in question)

Any help would be appreciated.

• This topic was modified 5 years, 10 months ago by Heather.
• This topic was modified 5 years, 10 months ago by Heather.

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