flutter_launcher_icons not working Unhandled exception: FormatException: Invalid number (at character 1)
I just had the same problem and solved doing this in android/app/build.gradle. Changed: minSdkVersion flutter.minSdkVersion targetSdkVersion flutter.targetSdkVersion To: minSdkVersion 26 targetSdkVersion 30 Source [Edit] After that, I could not run on emulator, so I changed back the gradle file (without running flutter_launcher_icon again). Now I have the app running and the icons are right.