Error with ACF flexible_content being empty

When broadcasting a form with ACF fields, a flexible content area without a layout and/or content throws an “invalid foreach” error with ACF.php.

I tracked down the issue in the code, and it looks it’s trying to loop through a non-existent array.

I was able to implement a quickie bypass,

case 'flexible_content':
     if(!is_array($action->field->layouts) || empty($action->field->value)) {
          break;
     }
.....

However, it would be great to have this changed in the master.
https://ww.wp.xz.cn/plugins/threewp-broadcast/