Android Studio JavaのRealｍを使ったスケジュールアプリの作成中にエミュレータで起動した際に強制終了する

前提・実現したいこと

現在,「はじめてのAndroidプログラミング」という参考書でJavaの勉強をしております。
その参考書でスケジュールアプリを作成して、いろいろと学んでいるのですが、エミュレーターでアプリを起動瞬間に強制終了するので、これを治したいです。
どなたかよろしくお願いいたします。

発生している問題・エラーメッセージ

実行したときのログになります。
ログの中にものすごい長い文があり、この文の中に、**Unsupported Realm file format version. (Unsupported Realm file format version) **
があると思うんですが、これが原因かなと思っております。

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.myscheduler, PID: 31814
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.myscheduler/com.example.myscheduler.MainActivity}: io.realm.exceptions.RealmFileException: Unable to open a realm at path '/data/data/com.example.myscheduler/files/default.realm': Unsupported Realm file format version. (Unsupported Realm file format version) (/data/data/com.example.myscheduler/files/default.realm) in /Users/cm/Realm/realm-java/realm/realm-library/src/main/cpp/io_realm_internal_SharedRealm.cpp line 109 Kind: ACCESS_ERROR.
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2913)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:193)
        at android.app.ActivityThread.main(ActivityThread.java:6669)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
     Caused by: io.realm.exceptions.RealmFileException: Unable to open a realm at path '/data/data/com.example.myscheduler/files/default.realm': Unsupported Realm file format version. (Unsupported Realm file format version) (/data/data/com.example.myscheduler/files/default.realm) in /Users/cm/Realm/realm-java/realm/realm-library/src/main/cpp/io_realm_internal_SharedRealm.cpp line 109 Kind: ACCESS_ERROR.
        at io.realm.internal.SharedRealm.nativeGetSharedRealm(Native Method)
        at io.realm.internal.SharedRealm.<init>(SharedRealm.java:187)
        at io.realm.internal.SharedRealm.getInstance(SharedRealm.java:229)
        at io.realm.internal.SharedRealm.getInstance(SharedRealm.java:204)
        at io.realm.RealmCache.createRealmOrGetFromCache(RealmCache.java:124)
        at io.realm.Realm.getDefaultInstance(Realm.java:210)
        at com.example.myscheduler.MainActivity.onCreate(MainActivity.java:36)
        at android.app.Activity.performCreate(Activity.java:7136)
        at android.app.Activity.performCreate(Activity.java:7127)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048) 
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) 
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) 
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808) 
        at android.os.Handler.dispatchMessage(Handler.java:106) 
        at android.os.Looper.loop(Looper.java:193) 
        at android.app.ActivityThread.main(ActivityThread.java:6669) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

該当のソースコード

MainActivity.java

java
1package com.example.myscheduler;
2
3import android.content.Intent;
4import android.os.Bundle;
5import android.view.View;
6import android.widget.ListView;
7
8import androidx.appcompat.app.AppCompatActivity;
9import androidx.appcompat.widget.Toolbar;
10
11import com.google.android.material.floatingactionbutton.FloatingActionButton;
12
13import io.realm.Realm;
14import io.realm.RealmResults;
15
16public class MainActivity extends AppCompatActivity {
17
18    private Realm mRealm;
19    private ListView mListView;
20
21    @Override
22    protected void onCreate(Bundle savedInstanceState) {
23        super.onCreate(savedInstanceState);
24        setContentView(R.layout.activity_main);
25        Toolbar toolbar = findViewById(R.id.toolbar);
26        setSupportActionBar(toolbar);
27
28        FloatingActionButton fab = findViewById(R.id.fab);
29        fab.setOnClickListener(new View.OnClickListener() {
30            @Override
31            public void onClick(View view) {
32                startActivity( new Intent(MainActivity.this,ScheduleEditActivity.class));
33            }
34        });
35
36        mRealm = Realm.getDefaultInstance();
37
38        mListView = (ListView)findViewById(R.id.listView);
39
40        RealmResults<Schedule> schedules = mRealm.where(Schedule.class).findAll();
41        ScheduleAdapter adapter = new ScheduleAdapter(schedules);
42        mListView.setAdapter(adapter);
43    }
44
45    @Override
46    public void onDestroy() {
47        super.onDestroy();
48        mRealm.close();
49    }
50}

build.gradle(Module:MyScheduler.app)

apply plugin: 'com.android.application'
apply plugin: 'realm-android'

android {
    compileSdkVersion 29
    buildToolsVersion "30.0.2"

    defaultConfig {
        applicationId "com.example.myscheduler"
        minSdkVersion 23
        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'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {

    implementation 'androidx.appcompat:appcompat:1.2.0'
    implementation 'com.google.android.material:material:1.3.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
    implementation 'androidx.navigation:navigation-fragment:2.3.3'
    implementation 'androidx.navigation:navigation-ui:2.3.3'
    testImplementation 'junit:junit:4.+'
    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
    compile 'io.realm:android-adapters:2.0.0'
}

build.gradle(Project:MyScheduler)

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath "com.android.tools.build:gradle:4.1.2"
        classpath "io.realm:realm-gradle-plugin:3.0.0"
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}