"ERROR: The minSdk version should not be declared in the android manifest file. You can move the version from the manifest to the defaultConfig in the build.gradle file."
Android 10 は API level 29 らしい。 "To start developing with the new APIs, you'll need to set up the Android 10 (API 29) SDK in Android Studio and change both your targetSdkVersion and compileSdkVersion to 29."