A TimThumb error has occured

The following error(s) occured:

You may not fetch images from that site. To enable this site in timthumb, you can either add it to $ALLOWED_SITES and set ALLOW_EXTERNAL=true. Or you can set ALLOW_ALL_EXTERNAL_SITES=true, depending on your security needs.

Query String : src=https://mmbiz.qpic.cn/mmbiz_png/bw4cKXR5Hvc85dicSDLzXwvgIG2K4jPSiaWjL4lcsHUD8sUktsAibh5TH0oRjv0t7Ahia4eXUy26tRGia5ibQDefwQ6g/0?wx_fmt=png&h=180.2&w=240&zc=1
TimThumb version : 2.8.14