TimThumb Error

The following error(s) occurred:

• Error reading the URL you specified from remote host.Could not resolve host: scontent-frt3-1.cdninstagram.com

Query String: src=https%3A%2F%2Fscontent-frt3-1.cdninstagram.com%2Ft51.2885-15%2Fe15%2Ffr%2Fp1080x1080%2F22794023_1732561873704978_686669754852704256_n.jpg&w=90&h=64&zc=1
TimThumb version: 2.8.14
Instruction: Thumbnails don't work — what to do? (registration required)