I have a room database on my App. It’s 3 files: Model, Database and DAO.

I’m add a new val to Model and I update my database version on Database file. And I get a crash.

@Database(entities = [Reminder::class], version = 1)
abstract class ReminderDatabase : RoomDatabase() {
    abstract fun userReminderDao(): ReminderDAO

    companion object {
        private var INSTANCE: ReminderDatabase? = null

        val MIGRATION_1_2 = object : Migration(1, 2) {
            override fun migrate(database: SupportSQLiteDatabase) {
                database.execSQL(
                    "CREATE TABLE Reminder_2 (" +
                            "id INTEGER NOT NULL, " +
                            "title TEXT, " +
                            "note TEXT, " +
                            "date TEXT, " +
                            "PRIMARY KEY(id))"
                )

                database.execSQL("INSERT INTO Reminder_2 (id, title, note, date) SELECT id, title, note, date FROM Reminder")

                database.execSQL("DROP TABLE Reminder")

                database.execSQL("ALTER TABLE Reminder_2 RENAME TO Reminder")
            }
        }

        fun getInstance(context: Context): ReminderDatabase {
            if (INSTANCE == null) {
                synchronized(ReminderDatabase::class) {
                    INSTANCE = Room.databaseBuilder(
                        context.applicationContext,
                        ReminderDatabase::class.java,
                        "Reminder"
                    )
                        .addMigrations(MIGRATION_1_2)
                        .build()
                }
            }

            return INSTANCE!!
        }
        

    }
}

I try the Migrations but I can’t run it. When I open the app, in 2 seconds app get a crash. Please help me.