Content Error 400

There are problems encountered to retrieve 1 content files when I use the widget.
Please check any page with widget at:
http://www.seocentro.com/tools/seo/seo-analyzer.html
You will get one error 400 with URL:
http://maps.googleapis.com/maps/api/staticmap?center=***************

https://ww.wp.xz.cn/plugins/google-maps-widget/