Bug Unity version 2021.1.14f1 has serious error of NDK version

I tried on my machine 3 three times to install unity . But No success . I have installed it from Unity Hub . Unity editor Version is 2021.1.14f1 . So i also installed the android support and NDK and JDK modules from Unity from The editor. But NDK is not installed. So i checked on Google android website , the version for NDK r21e(
21.4.7075529)
is there.
But the Unity Editor Demands Version NDK r21d (21.3.6528147). and The required version is not there on android website also https://developer.android.com/ndk/downloads. So I checked also version history. but the version r21d is not there.

So i am not able to build and run the project of Unity.

Please check unity team for this serious problem with your new version as NDK for that version is not there.