Hi, 1. I selected(checked) Android SDK and Android NDK in External Tools of Unity2019.1.9f1 via Unity Hub, instead of manually installing them. When I check their check box, It says; " You are missing the recommended Android SDK tools(Android NDK). Install the recommended versions with Unity Hub.", but I cannot find any recommended versions in Unity Hub Installs. 2. I wonder if this is normal or any issue to solve? 3. Anyway, my app works excellently without any problems. Your opinion will be very appreciated. Thank you.