plplot 5.13.7 error: 無法載入 DLL 'plplot

1. ASUS X450J @ Windows 10 x64 VS2017
2. Ref: https://github.com/surban/PLplotNet/blob/master/Samples/CSharp/SineWaves/Program.cs
3. Ref: https://docs.microsoft.com/zh-tw/dotnet/machine-learning/tutorials/taxi-fare
            Console.WriteLine("Showing chart...");
            var p = new Process();
            string chartFileNamePath = @".\" + "SineWaves.png";
            p.StartInfo = new ProcessStartInfo(chartFileNamePath)
            {
                UseShellExecute = true
            };
            p.Start();
4. 5.13.7 error 無法載入 DLL 'plplot
5. Change into 5.13.4
Any CPU
System.BadImageFormatException: '試圖載入格式錯誤的程式。 (發生例外狀況於 HRESULT: 0x8007000B)'
6. x64 OK