在API周围 Package 另一个try catch，这样它就不会停止迭代。

const myFuncDoesALotOfThings = async () => {
    try{
        await CollectionA.deleteMany({});
        await CollectionB.deleteMany({});
        const allCollectionsC = CollectionsC.find({'country': "UK"});   
        for await (const coll of allCollectionsC){
            if(coll.city === 'London'){
              try{
                await doSomeMongoDbOperation(); 
                } catch(e){
                   console.log("mongo operation failed")
                }
            }
        }
    }
    catch(exception){
        console.log("exception",exception);
        //here I think I want to resume
    }
}