TimThumb Error

The following error(s) occurred:

• The remote file is not a valid image. Mimetype = ''/home/taniarti/public_html/xn----zmc2azfb75a3job2sd/images/raxo_thumbs/amp/timthumbHLrkLk

Query String: src=https%3A%2F%2Finstagram.fevn1-2.fna.fbcdn.net%2Fvp%2Fd866be788ee14b2c282ae6c6cd334f2c%2F5D59E97E%2Ft51.2885-15%2Fe35%2F58409670_313497592677946_533500829771763920_n.jpg%3F_nc_ht%3Dinstagram.fevn1-2.fna.fbcdn.net&w=246&h=150&zc=1
TimThumb version: 2.8.14
Instruction: Thumbnails don't work — what to do? (registration required)