I have started a new demo app by the command “ionic start myApp sidemenu”
After creating a new app, I add the platform for android device and after creating an APK file install that and trying to lunch the app but showing error ‘ERR_FILE_NOT_FOUND’.
So After a search on google found one solution fixed this
please check this link https://ionicframework.com/docs/v3/wkwebview/#downgrading-to-uiwebview
also added below code in config.xml
Also deleted the line from index.html.
after all the changes created a new apk file and installed the apk file, then ‘ERR_FILE_NOT_FOUND’ issue solved but not showing any content, showing blank.