SOS, SAVE LITTLE POOR GUY, [WARN] Error with .\www\lib\ionic\version.json file: FILE_NOT_FOUND, trying .\bower.json

Hi. I have been fixing this problem, for like 3days. Please save me :smile:

It used to work like a month ago, But suddenly,
When I run “Ionic serve”, it shows me
[WARN] Error with .\www\lib\ionic\version.json file: FILE_NOT_FOUND, trying .\bower.json.
and in Web Browser, there is an empty page.

PS C:\Users\Hun\Desktop\Work\Ionic\self-hosted-backend\AppSeedRestaurant-1.5\project> ionic info
[WARN] Error with .\www\lib\ionic\version.json file: FILE_NOT_FOUND, trying .\bower.json.

cli packages: (C:\Users\Hun\AppData\Roaming\npm\node_modules)

@ionic/cli-utils  : 1.19.2
ionic (Ionic CLI) : 3.20.0

global packages:

cordova (Cordova CLI) : not installed

local packages:

Cordova Platforms : android 7.0.0
Ionic Framework   : unknown


Node : v8.11.3
npm  : 6.1.0
OS   : Windows 10

Environment Variables:

ANDROID_HOME : not set


backend : pro

I tried " npm install -g cordova" to try to set as a global package and also didn’t work and suddenly it changed to local package.

Please help this little newbie :smile: :