DebugAH

You need to migrate the principle support library to AndroidX and use implementation to add dependencies.

Step 1: Code Section

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'androidx.appcompat:appcompat:1.0.0'
    implementation 'androidx.percentlayout:percentlayout:1.0.0'
    testImplementation 'junit:junit:4.13.2'
}

Step 2: Migrate to AndroidX

Test, Launch succeeded, now the problem is solved.