jsonstore.exe : fatal error LNK1120: 4 external unresolved

[lele-77]

Hello,
I'm trying to compile jsonstore on visual studio 2019 where the drogon and trator lib are already compiled without any problem.
The jsonstore.exe task doesn't compile with following errors:

3>main.obj : error LNK2019: riferimento al simbolo esterno "public: class Json::Value & __cdecl Json::Value::operator[](class std::basic_string_view<char,struct std::char_traits >)" (??AValue@Json@@QEAAAEAV01@V?$basic_string_view@DU?$char_traits@D@std@@@std@@@z) non risolto nella funzione "public: void __cdecl JsonStore::deleteItem(class std::shared_ptr const &,class std::function<void __cdecl(class std::shared_ptr const &)> &&,class std::basic_string<char,struct std::char_traits,class std::allocator > const &)" (?deleteItem@JsonStore@@QEAAXAEBV?$shared_ptr@VHttpRequest@drogon@@@std@@$$QEAV?$function@$$A6AXAEBV?$shared_ptr@VHttpResponse@drogon@@@std@@@z@3@AEBV?$basic_string@DU?$char_traits@D@std@@v?$allocator@D@2@@3@@z)
3>drogon.lib(HttpAppFrameworkImpl.obj) : error LNK2001: simbolo esterno "public: class Json::Value & __cdecl Json::Value::operator[](class std::basic_string_view<char,struct std::char_traits >)" (??AValue@Json@@QEAAAEAV01@V?$basic_string_view@DU?$char_traits@D@std@@@std@@@z) non risolto
3>drogon.lib(ConfigLoader.obj) : error LNK2001: simbolo esterno "public: class Json::Value & __cdecl Json::Value::operator[](class std::basic_string_view<char,struct std::char_traits >)" (??AValue@Json@@QEAAAEAV01@V?$basic_string_view@DU?$char_traits@D@std@@@std@@@z) non risolto
3>drogon.lib(GlobalFilters.obj) : error LNK2019: riferimento al simbolo esterno "public: class Json::Value const & __cdecl Json::Value::operator[](class std::basic_string_view<char,struct std::char_traits >)const " (??AValue@Json@@QEBAAEBV01@V?$basic_string_view@DU?$char_traits@D@std@@@std@@@z) non risolto nella funzione "public: class std::basic_string<char,struct std::char_traits,class std::allocator > const & __cdecl drogon::DrObject::DrAllocator::className(void)const " (?className@DrAllocator@?$DrObject@VGlobalFilters@plugin@drogon@@@drogon@@QEBAAEBV?$basic_string@DU?$char_traits@D@std@@v?$allocator@D@2@@std@@xz)
3>drogon.lib(HttpAppFrameworkImpl.obj) : error LNK2001: simbolo esterno "public: class Json::Value const & __cdecl Json::Value::operator[](class std::basic_string_view<char,struct std::char_traits >)const " (??AValue@Json@@QEBAAEBV01@V?$basic_string_view@DU?$char_traits@D@std@@@std@@@z) non risolto
3>drogon.lib(ConfigLoader.obj) : error LNK2001: simbolo esterno "public: class Json::Value const & __cdecl Json::Value::operator[](class std::basic_string_view<char,struct std::char_traits >)const " (??AValue@Json@@QEBAAEBV01@V?$basic_string_view@DU?$char_traits@D@std@@@std@@@z) non risolto
3>drogon.lib(PluginsManager.obj) : error LNK2001: simbolo esterno "public: class Json::Value const & __cdecl Json::Value::operator[](class std::basic_string_view<char,struct std::char_traits >)const " (??AValue@Json@@QEBAAEBV01@V?$basic_string_view@DU?$char_traits@D@std@@@std@@@z) non risolto
3>drogon.lib(PromExporter.obj) : error LNK2001: simbolo esterno "public: class Json::Value const & __cdecl Json::Value::operator[](class std::basic_string_view<char,struct std::char_traits >)const " (??AValue@Json@@QEBAAEBV01@V?$basic_string_view@DU?$char_traits@D@std@@@std@@@z) non risolto
3>drogon.lib(SecureSSLRedirector.obj) : error LNK2001: simbolo esterno "public: class Json::Value const & __cdecl Json::Value::operator[](class std::basic_string_view<char,struct std::char_traits >)const " (??AValue@Json@@QEBAAEBV01@V?$basic_string_view@DU?$char_traits@D@std@@@std@@@z) non risolto
3>drogon.lib(RealIpResolver.obj) : error LNK2001: simbolo esterno "public: class Json::Value const & __cdecl Json::Value::operator[](class std::basic_string_view<char,struct std::char_traits >)const " (??AValue@Json@@QEBAAEBV01@V?$basic_string_view@DU?$char_traits@D@std@@@std@@@z) non risolto
3>drogon.lib(Hodor.obj) : error LNK2001: simbolo esterno "public: class Json::Value const & __cdecl Json::Value::operator[](class std::basic_string_view<char,struct std::char_traits >)const " (??AValue@Json@@QEBAAEBV01@V?$basic_string_view@DU?$char_traits@D@std@@@std@@@z) non risolto
3>drogon.lib(Hodor.obj) : error LNK2001: simbolo esterno "public: class Json::Value __cdecl Json::Value::get(class std::basic_string_view<char,struct std::char_traits >,class Json::Value const &)const " (?get@Value@Json@@qeba?AV12@V?$basic_string_view@DU?$char_traits@D@std@@@std@@AEBV12@@z) non risolto
3>drogon.lib(SlashRemover.obj) : error LNK2001: simbolo esterno "public: class Json::Value __cdecl Json::Value::get(class std::basic_string_view<char,struct std::char_traits >,class Json::Value const &)const " (?get@Value@Json@@qeba?AV12@V?$basic_string_view@DU?$char_traits@D@std@@@std@@AEBV12@@z) non risolto
3>drogon.lib(ConfigLoader.obj) : error LNK2001: simbolo esterno "public: class Json::Value __cdecl Json::Value::get(class std::basic_string_view<char,struct std::char_traits >,class Json::Value const &)const " (?get@Value@Json@@qeba?AV12@V?$basic_string_view@DU?$char_traits@D@std@@@std@@AEBV12@@z) non risolto
3>drogon.lib(PluginsManager.obj) : error LNK2001: simbolo esterno "public: class Json::Value __cdecl Json::Value::get(class std::basic_string_view<char,struct std::char_traits >,class Json::Value const &)const " (?get@Value@Json@@qeba?AV12@V?$basic_string_view@DU?$char_traits@D@std@@@std@@AEBV12@@z) non risolto
3>drogon.lib(PromExporter.obj) : error LNK2001: simbolo esterno "public: class Json::Value __cdecl Json::Value::get(class std::basic_string_view<char,struct std::char_traits >,class Json::Value const &)const " (?get@Value@Json@@qeba?AV12@V?$basic_string_view@DU?$char_traits@D@std@@@std@@AEBV12@@z) non risolto
3>drogon.lib(SecureSSLRedirector.obj) : error LNK2001: simbolo esterno "public: class Json::Value __cdecl Json::Value::get(class std::basic_string_view<char,struct std::char_traits >,class Json::Value const &)const " (?get@Value@Json@@qeba?AV12@V?$basic_string_view@DU?$char_traits@D@std@@@std@@AEBV12@@z) non risolto
3>drogon.lib(AccessLogger.obj) : error LNK2001: simbolo esterno "public: class Json::Value __cdecl Json::Value::get(class std::basic_string_view<char,struct std::char_traits >,class Json::Value const &)const " (?get@Value@Json@@qeba?AV12@V?$basic_string_view@DU?$char_traits@D@std@@@std@@AEBV12@@z) non risolto
3>drogon.lib(RealIpResolver.obj) : error LNK2001: simbolo esterno "public: class Json::Value __cdecl Json::Value::get(class std::basic_string_view<char,struct std::char_traits >,class Json::Value const &)const " (?get@Value@Json@@qeba?AV12@V?$basic_string_view@DU?$char_traits@D@std@@@std@@AEBV12@@z) non risolto
3>drogon.lib(ConfigLoader.obj) : error LNK2019: riferimento al simbolo esterno "public: bool __cdecl Json::Value::isMember(class std::basic_string_view<char,struct std::char_traits >)const " (?isMember@Value@Json@@QEBA_NV?$basic_string_view@DU?$char_traits@D@std@@@std@@@z) non risolto nella funzione "class std::exception_ptr __cdecl std::make_exception_ptr(class std::future_error)" (??$make_exception_ptr@Vfuture_error@std@@@std@@ya?AVexception_ptr@0@Vfuture_error@0@@z)
3>drogon.lib(PromExporter.obj) : error LNK2001: simbolo esterno "public: bool __cdecl Json::Value::isMember(class std::basic_string_view<char,struct std::char_traits >)const " (?isMember@Value@Json@@QEBA_NV?$basic_string_view@DU?$char_traits@D@std@@@std@@@z) non risolto
3>drogon.lib(SecureSSLRedirector.obj) : error LNK2001: simbolo esterno "public: bool __cdecl Json::Value::isMember(class std::basic_string_view<char,struct std::char_traits >)const " (?isMember@Value@Json@@QEBA_NV?$basic_string_view@DU?$char_traits@D@std@@@std@@@z) non risolto
3>drogon.lib(Hodor.obj) : error LNK2001: simbolo esterno "public: bool __cdecl Json::Value::isMember(class std::basic_string_view<char,struct std::char_traits >)const " (?isMember@Value@Json@@QEBA_NV?$basic_string_view@DU?$char_traits@D@std@@@std@@@z) non risolto
3>drogon.lib(GlobalFilters.obj) : error LNK2001: simbolo esterno "public: bool __cdecl Json::Value::isMember(class std::basic_string_view<char,struct std::char_traits >)const " (?isMember@Value@Json@@QEBA_NV?$basic_string_view@DU?$char_traits@D@std@@@std@@@z) non risolto
3>C:\Users\graffaelli\Desktop\drogon-master\build\examples\Release\jsonstore.exe : fatal error LNK1120: 4 esterni non risolti

The jsoncpp library has been compiled in visual studio 2019 too without any errors.

Could you please help me to solve it?

Thanks,
Gabriele.