IDE Error when importing library in Android Studio

I want to import this library into my Android Project in Android Studio. I tried to do it this way

So I cloned the library and did File > New > Import Module > Path to libstreaming but i get an IDE Fatal Error:

Exception in Plugin Android

java.lang.NullPointerException
    at com.android.tools.idea.gradle.adtimport.GradleImport.getBuildToolsVersion(GradleImport.java:1081)
    at com.android.tools.idea.gradle.adtimport.GradleImport.createModuleBuildGradle(GradleImport.java:971)
    at com.android.tools.idea.gradle.adtimport.GradleImport.exportModule(GradleImport.java:927)
    at com.android.tools.idea.gradle.adtimport.GradleImport.exportProject(GradleImport.java:792)

I am using Android Studio Version 2021.1.1 Patch 1.

I dont know what to do with this Exception... What am I doing wrong?