Not being able to change the app Icon

I am trying to change the app Icon using Flutter launcher icon package. I did get the images fit in the assets. However, when i build it shows the following error

 error: Multiple commands produce '/build/ios/Debug-dev-iphonesimulator/Runner.app/Assets.car':
    1) Target 'Runner' (project 'Runner') has compile command with input '/ios/Runner/Assets.xcassets'
    2) That command depends on command in Target 'Runner' (project 'Runner'): script phase “[CP] Copy Pods Resources”

Can anyone please teach me ? All i wanted was just to change the app icon. :(

Not being able to change the app Icon
 
 
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