Using flatDirs should be avoided because it doesn’t support any meta-data formats

Inside your build.gradle file,
add following piece of code in android block:

android { ..
  sourceSets {
        main {
            jniLibs.srcDirs = ['libs']
        }
    }
}

and add dependency as:

implementation (files("libs/test_name.aar"))

delete following block:

repositories {
    flatDir {
        dirs 'libs'
    }
}