No toolchains found in the NDK toolchains folder for ABI with prefix: mips64el-linux-android
If you are using NDK >= 18 you have to update your android gradle plugin to >=3.1.x
See the Known Issues section:
https://android.googlesource.com/platform/ndk/+/ndk-release-r18/CHANGELOG.md
After looking around, the solution was to remove the NDK designation from my preferences.
Android Studio → Preferences → System Settings → Android SDK → SDK Tools → Unselect NDK → Apply button.
Project and Gradle compiled fine after that and I was able to move on with my project work.
As far as why this is happening, I do not know but for more info on NDK check out: https://developer.android.com/ndk/
I will go back and enable these libraries but for now.
for me, upgrade the Android Gradle plugin version to 3.2+ works.
classpath 'com.android.tools.build:gradle:3.2.0'