UWP APP getting crashed for Version lower than 1803 (build 17134)

Question

Faulting application name: MixAmp.exe, version: 1.0.0.0, time stamp: 0x6019999b Faulting module name: Windows.UI.Xaml.dll, version: 10.0.16299.2107, time stamp: 0x765f9675 Excep