Caused by: org.gradle.process.internal.ExecException: Process 'command 'C:\Users\lenovo\AppData\Local\Android\Sdk\ndk-bundle/ndk-build.cmd'' finished with non-zero exit value 2 about face-landmark-android HOT 2 OPEN

I had that issue too and it is solved by deleting all ndk config lines in the gradle file and then adding that to defaultConfig

    externalNativeBuild {
        ndkBuild {
            targets "app"
            cppFlags "-std=c++11 -fexceptions"
            arguments "APP_STL=gnustl_shared"
            abiFilters "armeabi-v7a"
        }
    }

As Android Studio, 2.3.2 has integrated externalNativeBuild in android gradle plugin, so you don't need the tricks with custom gradle task.

Source here

from face-landmark-android.

I'm also facing this issue

from face-landmark-android.