Crashes on some devices

[dbof10]

 E/AndroidRuntime: FATAL EXCEPTION: main

    java.lang.RuntimeException: Unable to start activity ComponentInfo{id.codigo.klikdokter.stagingv2/com.qiscus.meet.QiscusMeetActivity}: java.lang.RuntimeException: Unable to create instance of class java.lang.ClassLoader. Registering an InstanceCreator or a TypeAdapter for this type, or adding a no-args constructor may fix this problem.
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2668)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2729)
        at android.app.ActivityThread.-wrap12(ActivityThread.java)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1480)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:154)
        at android.app.ActivityThread.main(ActivityThread.java:6138)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:893)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:783)
     Caused by: java.lang.RuntimeException: Unable to create instance of class java.lang.ClassLoader. Registering an InstanceCreator or a TypeAdapter for this type, or adding a no-args constructor may fix this problem.
        at com.google.gson.internal.ConstructorConstructor$16.construct(ConstructorConstructor.java:275)
        at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:211)
        at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:130)
        at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:221)
        at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:130)
        at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:221)
        at com.google.gson.Gson.fromJson(Gson.java:991)
        at com.google.gson.Gson.fromJson(Gson.java:956)
        at com.google.gson.Gson.fromJson(Gson.java:905)
        at com.google.gson.Gson.fromJson(Gson.java:876)
        at com.qiscus.meet.QiscusMeetActivity.initialize(QiscusMeetActivity.kt:121)
        at org.jitsi.meet.sdk.JitsiMeetActivity.onCreate(JitsiMeetActivity.java:86)
        at com.qiscus.meet.QiscusMeetActivity.onCreate(QiscusMeetActivity.kt:90)
        at android.app.Activity.performCreate(Activity.java:6785)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1147)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2621)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2729) 
        at android.app.ActivityThread.-wrap12(ActivityThread.java) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1480) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:154) 
        at android.app.ActivityThread.main(ActivityThread.java:6138) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:893) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:783) 
     Caused by: java.lang.UnsupportedOperationException: Abstract class can't be instantiated! Class name: java.lang.ClassLoader
        at com.google.gson.internal.UnsafeAllocator.assertInstantiable(UnsafeAllocator.java:121)
        at com.google.gson.internal.UnsafeAllocator$1.newInstance(UnsafeAllocator.java:49)
        at com.google.gson.internal.ConstructorConstructor$16.construct(ConstructorConstructor.java:272)
        at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:211) 
        at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:130) 
        at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:221) 
        at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:130) 
        at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:221) 
        at com.google.gson.Gson.fromJson(Gson.java:991) 
        at com.google.gson.Gson.fromJson(Gson.java:956) 
        at com.google.gson.Gson.fromJson(Gson.java:905) 
        at com.google.gson.Gson.fromJson(Gson.java:876) 
        at com.qiscus.meet.QiscusMeetActivity.initialize(QiscusMeetActivity.kt:121) 
        at org.jitsi.meet.sdk.JitsiMeetActivity.onCreate(JitsiMeetActivity.java:86) 
        at com.qiscus.meet.QiscusMeetActivity.onCreate(QiscusMeetActivity.kt:90) 
        at android.app.Activity.performCreate(Activity.java:6785) 
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1147) 
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2621) 
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2729) 
        at android.app.ActivityThread.-wrap12(ActivityThread.java) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1480) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:154) 
        at android.app.ActivityThread.main(ActivityThread.java:6138) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:893) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:783) 

Affected version: all
Crashes on some devices like redmi4a, bluestack emulator. The crash occurs on integration app, qiscuss sample app