ANN classification error

Good day everyone, thanks for taking the time to look into my question. I've started implementing an ANN classification based on OpenCV but I have this error: * error LNK2019: symbole externe non résolu "public: static class cv::Ptr __cdecl cv::ml::ANN_MLP::create(void)" (?create@ANN_MLP@ml@cv@@SA?AV?$Ptr@VANN_MLP@ml@cv@@@3@XZ) référencé dans la fonction main * error LNK1120: 2 externes non résolus Thanks you for your help.