BQ 插入记录类型成功，未插入数据

type tagInfo struct {
    proj_name string `bigquery:"proj_name"`
    Tags      Tags   `bigquery:"tags"`
}
type Tags struct {
    key    string `bigquery:"key"`
    values string `bigquery:"values"`
}
func insertData() error {
    prjName := "prjName"
    datasetID := "DSName"
    tableID := "TName"

    ctx := context.Background()
    client, err := bigquery.NewClient(ctx, prjName)
    if err != nil {
        return fmt.Errorf("Bigquery.NewClient: %w", err)
    }
    defer client.Close()

    item := &tagInfo{
        proj_name: "Devil",
        Tags: Tags{
            key:    "engcontact",
            values: "Meryl Streep",
        },
    }
    fmt.Printf("Item is: %s", item)
    items := []*tagInfo{item}

    table := client.Dataset(datasetID).Table(tableID)
    inserter := table.Inserter()
    err = inserter.Put(ctx, items)

    if err != nil {
        if multiErr, ok := err.(bigquery.PutMultiError); ok {
            for _, putErr := range multiErr {
                fmt.Printf("failed to insert row %d with err: %v \n", putErr.RowIndex, putErr.Error())
                fmt.Println(putErr.Errors)
            }
        }
        return err
    }
    return nil
}

type taginfo struct {
    projname string `bigquery:"proj_name"`
    tags     tags   `bigquery:"tags"`
}
type tags struct {
    key    string `bigquery:"key"`
    values string `bigquery:"values"`
}