config

app/build.gradle

@@ -56,7 +56,7 @@ dependencies {
     implementation 'com.squareup.retrofit2:retrofit:2.9.0'
     implementation 'com.squareup.retrofit2:converter-gson:2.9.0'
     implementation 'com.google.code.gson:gson:2.8.6'
-
+    implementation 'com.facebook.stetho:stetho:1.5.1'
     testImplementation 'junit:junit:4.13'
     androidTestImplementation 'androidx.test.ext:junit:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'

app/src/main/AndroidManifest.xml

@@ -18,6 +18,7 @@
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
+        android:name=".CashierApp"
         android:theme="@style/AppTheme2">
         <activity
             android:name=".activities.SkActivity"

app/src/main/java/com/example/yourcashiertest/CashierApp.java

 package com.example.yourcashiertest;
 
-public class CashierApp {
+import android.app.Application;
+
+import com.facebook.stetho.Stetho;
+
+public class CashierApp extends Application {
+    @Override
+    public void onCreate() {
+        super.onCreate();
+        Stetho.initializeWithDefaults(this);
+    }
 }