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%2F453c8efc1719d9ee3da551981cbc392c%2F5D142800%2Ft51.2885-15%2Fe35%2F52593555_185368019119323_7991726421880579106_n.jpg%3F_nc_ht%3Dscontent-frx5-1.cdninstagram.com&w=246&h=150&zc=1
TimThumb version: 2.8.14
Instruction: Thumbnails don't work — what to do? (registration required)