Ionic 5 ios icon problem

My all icons are showing normally but only when i try to close application in ios , i cant see my app’s icon , how can i fix it ?

It cache version of your app thats why it is showing old app icon, If it is possible deploy in another iOS device and check

i know that , i already run another device and no problem but how can i clean first device ?

try to clear cache of an app, Try this step : https://www.macrumors.com/how-to/clear-cache-iphone-ipad/

i have tried but still not update icon