Error: Program type already present, when adding QR reader module [duplicate]
Clash Royale CLAN TAG #URR8PPP Error: Program type already present, when adding QR reader module [duplicate] This question already has an answer here: I've added the following line to my build.gradle: implementation 'com.journeyapps:zxing-android-embedded:3.5.0' implementation 'com.journeyapps:zxing-android-embedded:3.5.0' and then got this Error when trying to build the project: Error: Program type already present: android.support.v4.os.ResultReceiver$MyResultReceiver Can anyone explain the meaning of that error This is my entire current build gradle: apply plugin: 'com.android.application' android compileSdkVersion 28 defaultConfig applicationId "com.example.chaimovy.myapplication" minSdkVersion 15 targetSdkVersion 28 versionCode 1 versionName "1.0" testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" multiDexEnabled true buildTypes release minifyEnabled false proguardFiles getDefaultProguard...