how to Fix Class duplication errors in Android studio

I am trying to add Firebase in the build.gradle file. However, it doesn’t seem to be working. this is my build.gradle file and below is the error. I even looked some previous stack-overflow question but they didn’t work so please help me out.!

apply plugin: 'com.android.application' apply plugin: 'com.google.gms.google-services' googleServices.disableVersionCheck = true android {     compileSdkVersion 29     buildToolsVersion "30.0.1"      defaultConfig {         applicationId "com.teachbrowniesindia.textrecognizer"         minSdkVersion 19         targetSdkVersion 29         versionCode 1         versionName "1.0"          testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"     }      buildTypes {         release {             minifyEnabled false             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'         }     } }  dependencies {     implementation fileTree(dir: "libs", include: ["*.jar"])     implementation 'androidx.appcompat:appcompat:1.2.0'     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'     implementation 'com.google.firebase:firebase-ml-vision:24.1.0'     testImplementation 'junit:junit:4.13'     androidTestImplementation 'androidx.test.ext:junit:1.1.1'     implementation 'com.google.android.gms:play-services-ads:19.3.0'     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0' }   

Error

Duplicate class com.google.android.gms.internal.vision.zzf found in modules jetified-play-services-vision-20.0.0-runtime.jar (com.google.android.gms:play-services-vision:20.0.0) and jetified-play-services-vision-common-19.1.0-runtime.jar (com.google.android.gms:play-services-vision-common:19.1.0) Duplicate class com.google.android.gms.internal.vision.zzg found in modules jetified-play-services-vision-20.0.0-runtime.jar (com.google.android.gms:play-services-vision:20.0.0) and jetified-play-services-vision-common-19.1.0-runtime.jar (com.google.android.gms:play-services-vision-common:19.1.0) Duplicate class com.google.android.gms.internal.vision.zzh found in modules jetified-play-services-vision-20.0.0-runtime.jar (com.google.android.gms:play-services-vision:20.0.0) and jetified-play-services-vision-common-19.1.0-runtime.jar (com.google.android.gms:play-services-vision-common:19.1.0) Duplicate class com.google.android.gms.internal.vision.zzi found in modules jetified-play-services-vision-20.0.0-runtime.jar (com.google.android.gms:play-services-vision:20.0.0) and jetified-play-services-vision-common-19.1.0-runtime.jar (com.google.android.gms:play-services-vision-common:19.1.0) Duplicate class com.google.android.gms.internal.vision.zzv found in modules jetified-play-services-vision-20.0.0-runtime.jar (com.google.android.gms:play-services-vision:20.0.0) and jetified-play-services-vision-common-19.1.0-runtime.jar (com.google.android.gms:play-services-vision-common:19.1.0) Duplicate class com.google.android.gms.internal.vision.zzw found in modules jetified-play-services-vision-20.0.0-runtime.jar (com.google.android.gms:play-services-vision:20.0.0) and jetified-play-services-vision-common-19.1.0-runtime.jar (com.google.android.gms:play-services-vision-common:19.1.0)  Go to the documentation to learn how to Fix dependency resolution errors. 
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1 Answer(s)

For now the fix seems to be to downgrade firebase-ml-vision to 24.0.3

Answered on August 29, 2020.
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