Cordova Windows 10 shows Blank screen

I’m trying to make windows version of my app it creates debug version successfully but all I get is blank screen.

config.xml

<preference name="windows-target-version" value="10.0" />
<preference name="windows-phone-target-version" value="10.0" />

Commands tried

ionic cordova build windows

ionic cordova run windows --arch="x86"

same results.

Any ideas?