Ionic add platform ios issue

Hi all
i have made a project 8 months ago using ionic 2 , and after 8 months i have just changed some text in my js code, then i fire following command:

  1. ionic serve (code runs successfully in browser)
    2.ionic cordova platform remove ios
  2. ionic cordova platform add ios

now i am facing following issues:

  1. it shows me warning that “resources/android/splash/drawable-xhdpi-splash.png” not found
  2. and when i open the project in xcode , then the plugin’s native files not added in “plugins” directory of platform

i am searching alot for this, not able to find any solution. i need helpin this urgently

if anyone has solution for this, then please contact me

Thanks & Regards