TimThumb Error

The following error(s) occurred:

• Error reading the URL you specified from remote host.Could not resolve host: scontent-frx5-1.cdninstagram.com

Query String: src=https%3A%2F%2Fscontent-frx5-1.cdninstagram.com%2Fvp%2Fa007c54bb094d42f764d05860dd2c390%2F5D15D7CE%2Ft51.2885-15%2Fe15%2Fc90.0.900.900%2Fs640x640%2F52729417_315315122507892_6798742239496303962_n.jpg%3F_nc_ht%3Dscontent-frx5-1.cdninstagram.com&w=90&h=64&zc=1
TimThumb version: 2.8.14
Instruction: Thumbnails don't work — what to do? (registration required)