FCTRL2 Problem on server side

https://www.codechef.com/viewsolution/25199302

I tested my solution in Xcode, then I tested it in various online Swift compilators - everything was fine. Moreover, I found an online compilator with Swift version 3.0.2 exactly like yours. And again, my code passed all tests. But whenever I run my code in CodeChef IDE I get the same error - “./prog: error while loading shared libraries: libcurl.so.4: cannot open shared object file: No such file or directory
I think that the problem on the server side. I like CodeChef but this situation makes me totally frustrated.