View Compilation Error

0_0_37765588_1219.cpp: In function 'Convex get_convexhull(std::vector<point<double> >)':
0_0_37765588_1219.cpp:353:15: error: could not convert '{st}' from '<brace-enclosed initializer list>' to 'Convex {aka convex<double>}'
     return {st};
               ^