"Android NDK Version 26 is not installed" but it is

I had CodeWorks 1R6 and I’m told that you need at least API level of 26 for Google Play Store.
And 1R6 didn’t have API level 26 so I upgraded it to 1R7 and API Level 26 files are all good now. I set both the SDK and NDK versions to 26 inside the Android SDK Override Project Settings. But while packaging I get an error saying NDK API 26 is not installed. But it apparently is according to the file directory it refers to.

Have you solved this?

No, I actually was able to build and package the game by unchecking “Use Gradle instead of ANT” but I was having “Old API Version” errors from Google Play. After installing upgrading to 1R7 from 1R6 and installing NDK API 26, whatever I do I get a different and unsolvable error. I say unsolvable because when I search it there is no one having the same issues.
But yes this exact problem still continues and I’m having the error.

I actually gave up and delayed my Android game, I will start from scratch to it when I format my pc.

Thanks for the explanation