Iframe with space

Hi
When I use this plugin always appears a IFRAME the end of footer with style=”display:none;” it is ok! but now this IFRAME doesn’t have the display:none and there is a space in blank.

<iframe id=”rufous-sandbox” scrolling=”no” frameborder=”0″ allowtransparency=”true” style=””></iframe>

Why happend this?

https://ww.wp.xz.cn/plugins/widget-embed-lastest-tweets/