Visual Studio 2015 Link Error about jwt-cpp HOT 1 OPEN

I solved the above problem, but faced another problem.

Severity Code Description Project File Line Suppression State
Error LNK2019 unresolved external symbol "public: static class std::tuple<class nlohmann::basic_json<class std::map,class std::vector,class std::basic_string<char,struct std::char_traits,class std::allocator >,bool,__int64,unsigned __int64,double,class std::allocator,struct nlohmann::adl_serializer>,class nlohmann::basic_json<class std::map,class std::vector,class std::basic_string<char,struct std::char_traits,class std::allocator >,bool,__int64,unsigned __int64,double,class std::allocator,struct nlohmann::adl_serializer> > __cdecl JWT::Decode(class std::basic_string<char,struct std::char_traits,class std::allocator > const &,class MessageValidator *,class ClaimValidator *)" (?Decode@JWT@@sa?AV?$tuple@V?$basic_json@Vmap@std@@vvector@2@V?$basic_string@DU?$char_traits@D@std@@v?$allocator@D@2@@2@_N_J_KNVallocator@2@Uadl_serializer@nlohmann@@@nlohmann@@v12@@std@@aebv?$basic_string@DU?$char_traits@D@std@@v?$allocator@D@2@@3@PEAVMessageValidator@@PEAVClaimValidator@@@z) referenced in function main Project1 C:\Users\adydado\Desktop\Testbuild\Project1\Project1\Source.obj 1

from jwt-cpp.