Unity says the required Android NDK is r21d (64-bit) (21.3.6528147). But the available version of NDK 21 for downloading is r21e, which Unity does not accept. How to solve it?
Just paste this link in your browser
UNITY2018.
https://dl.google.com/android/repository/android-ndk-r16b-windows-x86_64.zip
UNITY 2020.
https://dl.google.com/android/repository/android-ndk-r19-windows-x86_64.zip
UNITY 2021.
https://dl.google.com/android/repository/android-ndk-r21d-windows-x86_64.zip
You can download the recommended version from the Unity Hub, find he unity version, and add modules add android sdk tools
Better off using 2019.4.18. There are quite a few problems with Hub and Google’s partner Gradle