Details

This happen when using latest url_launcher (6.1.11) with latest url_launcher_android (6.0.35) with AGP 8.x.x (8.0.2, in this case).

Basically, the Android version of an app using this plugin isn't able to build by default due to not finding the BuildConfig class.
This is due to AGP 8.0 setting the default value of android.defaults.buildfeatures.buildconfig to false.

This can be fixed by setting android.defaults.buildfeatures.buildconfig back to true in the app, but should ideally be fixed by enabling only for this plugin's module with:

android {
  buildFeatures {
    buildConfig true
  }
}

Target Platform: Android
Target OS version/browser: any
Devices: any

Logs

error: cannot find symbol
    if (BuildConfig.DEBUG) {
        ^
  symbol:   variable BuildConfig
  location: class UrlLauncher