I am having the same problem and found that the Gradle version on 4.27 is hardcoded to 4.0.0 in UEDeployAndroid.cs, ANDROID_TOOLS_BUILD_GRADLE_VERSION. If you want to change it, you will have to do a custom engine build.
I am having the same problem and found that the Gradle version on 4.27 is hardcoded to 4.0.0 in UEDeployAndroid.cs, ANDROID_TOOLS_BUILD_GRADLE_VERSION. If you want to change it, you will have to do a custom engine build.