win10 appx content not loaded

I’m using ionic4 building win10 appx,
ionic cordova build windows – --arch=“x64” --prod --release
the build was successfull and appx generated, even pass Microsoft dev center package check.
however, when I try to run the appx in my local win10. I always got the white screen, seems the element in is not loaded, could you give some suggestions on this, please?

I’m using vs2017 & vs2015. both shows white screen for debug x64.

seems by changing to from www/index.html works.
but is there a way to change href nicely? index.html is generated automatically when runing ionic cordova build windows.

now the following errors show:
‘WWAHost.exe’ (Script): Loaded ‘Script Code (MSAppHost/3.0)’.
‘WWAHost.exe’ (Script): Loaded ‘Sourcemap (ms-appx-web://27997bailin.reddah/www/runtime.js)’.
‘WWAHost.exe’ (Script): Loaded ‘Sourcemap (ms-appx-web://27997bailin.reddah/www/polyfills.js)’.
Exception was thrown at line 1168, column 35 in ms-appx-web://27997bailin.reddah/www/polyfills.js
0x800a139e - JavaScript runtime error: 2
‘WWAHost.exe’ (Script): Loaded ‘Sourcemap (ms-appx-web://27997bailin.reddah/www/styles.js)’.
‘WWAHost.exe’ (Script): Loaded ‘Sourcemap (ms-appx-web://27997bailin.reddah/www/vendor.js)’.
‘WWAHost.exe’ (Script): Loaded ‘Sourcemap (ms-appx-web://27997bailin.reddah/www/main.js)’.
Exception was thrown at line 117669, column 3 in ms-appx-web://27997bailin.reddah/www/vendor.js
0x800a138f - JavaScript runtime error: Unable to get property ‘add’ of undefined or null reference
Exception was thrown at line 19394, column 17 in ms-appx-web://27997bailin.reddah/www/vendor.js
0x800a139e - JavaScript runtime error: [object Object]
Exception was thrown at line 19394, column 17 in ms-appx-web://27997bailin.reddah/www/vendor.js
0x800a139e - JavaScript runtime error: [object Object]
Exception was thrown at line 19394, column 17 in ms-appx-web://27997bailin.reddah/www/vendor.js
0x800a139e - JavaScript runtime error: [object Object]
Exception was thrown at line 19394, column 17 in ms-appx-web://27997bailin.reddah/www/vendor.js
0x800a139e - JavaScript runtime error: [object Object]
Exception was thrown at line 3176, column 25 in ms-appx-web://27997bailin.reddah/www/polyfills.js
0x800a139e - JavaScript runtime error: Uncaught (in promise): Failed to load …/…/assets/maker/leaflet.awesome-markers.css
Exception was thrown at line 3176, column 25 in ms-appx-web://27997bailin.reddah/www/polyfills.js
0x800a139e - JavaScript runtime error: Uncaught (in promise): Failed to load …/…/assets/maker/leaflet.awesome-markers.css
Exception was thrown at line 3176, column 25 in ms-appx-web://27997bailin.reddah/www/polyfills.js
0x800a139e - JavaScript runtime error: Uncaught (in promise): Failed to load …/…/assets/maker/leaflet.awesome-markers.css
Exception was thrown at line 3176, column 25 in ms-appx-web://27997bailin.reddah/www/polyfills.js
0x800a139e - JavaScript runtime error: Uncaught (in promise): Failed to load …/…/assets/maker/leaflet.awesome-markers.css
Exception was thrown at line 3176, column 25 in ms-appx-web://27997bailin.reddah/www/polyfills.js
0x800a139e - JavaScript runtime error: Uncaught (in promise): Failed to load …/…/assets/maker/leaflet.awesome-markers.css
Exception was thrown at line 3176, column 25 in ms-appx-web://27997bailin.reddah/www/polyfills.js
0x800a139e - JavaScript runtime error: Uncaught (in promise): Failed to load …/…/assets/maker/leaflet.awesome-markers.css
‘WWAHost.exe’ (Script): Loaded ‘Sourcemap (ms-appx-web://27997bailin.reddah/www/plugins/cordova-plugin-photo-library/www/async/dist/async.min.js)’.
SourceMap D:\BailinStudio\reddah\Reddah.Ionic\platforms\windows\www\plugins\cordova-plugin-photo-library\www\async\dist\async.min.map read failed: Unexpected character encountered while parsing value: c. Path ‘’, line 0, position 0…Exception was thrown at line 296, column 5 in ms-appx-web://27997bailin.reddah/www/plugins/cordova-plugin-globalization/src/windows/GlobalizationProxy.js
0x80040154 - JavaScript runtime error: Class not registered
Unhandled exception at line 2544, column 25 in ms-appx-web://27997bailin.reddah/www/polyfills.js
0x80040154 - JavaScript runtime error: Class not registered

The program ‘[9020] WWAHost.exe’ has exited with code -1 (0xffffffff).