New Post: error LNK2001: unresolved external symbol

Error 9 error LNK2001: unresolved external symbol "__declspec(dllimport) class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __cdecl utility::conversions::from_base64_str(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > const &)" (_imp?from_base64_str@conversions@utility@@YA?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@ABV34@@Z)

Please rebuild library cpprest110_xp_1_3.lib and cpprest110_xp_1_3.dll

I am using lastest version (1.3.1)

   /// <summary>
    /// Decode the given base64 string to a byte array
    /// </summary>
    _ASYNCRTIMP std::vector<unsigned char> __cdecl from_base64(const utility::string_t& str);
    /// <summary>
    /// Decode the given base64 string to a byte array
    /// </summary>
   _ASYNCRTIMP std::string __cdecl from_base64_str(const std::string& str);

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