A TimThumb error has occured

The following error(s) occured:

Could not find the internal image you specified.

Query String : w=350&h=270&src=http://www.dwabrzegi.pl/wp-content/uploads/2014/08/123-Mocna-kawa-wcale-nie-jest-taka-z%c5%82a-Strong-Coffee-Isn%e2%80%99t-So-Bad-The-re%c5%bc.-Alek-Pietrzak-press-pack.jpg
TimThumb version : 2.8.13