Transaction cannot be rolled back because it has been finished with state: commit

let transaction
try{
    transaction = await ctx.app.model.transaction();
    const newPageResult = await pageService.add(addPageResult, { transaction });
    await transaction.commit();
    throw new Error("do rollback")

}catch(){
   transaction.rollback()
}

2021-04-28 17:02:53,801 ERROR 14904 [-/127.0.0.1/-/75306ms POST /page/copyPage] nodejs.Error: Transaction cannot be rolled back because it has been finished with state: commit
    at Transaction.rollback (/Users/my/work/node_modules/sequelize/lib/transaction.js:85:35)
    at PageController.copyPage (/Users/my/work/app/controller/pageController.ts:418:31)
    at process._tickCallback (internal/process/next_tick.js:68:7)

I have read source code, If await transcation.commit(), this.finished must be "commit"

So If want to rollback must throw error... Here is the source code