Fields conflict when validate input

[videni]

I am handling error this way, but I got

 "Fields \"name\" conflict because they return conflicting types String! and String. Use different aliases on the fields to fetch both if this was intentional",

#[derive(juniper::GraphQLInputObject)]
pub struct AddNodeInput {
    name: String,
    node_id: String,
    traffic_per_month: i32,
    host: String,
    active: bool,
    icon: Option<String>
}

#[derive(GraphQLObject)]
pub struct AddNodeInputError {
    pub name: Option<String>,
    pub traffic_per_month: Option<String>,
    pub host: Option<String>,
    pub active: Option<String>
}

#[derive(GraphQLUnion)]
pub enum AddNodeResult {
    Ok(Node),
    Err(AddNodeInputError),
}

mutation ($input: AddNodeInput!){
        addNode(input: $input){
          ... on Node {
              nodeId,
              icon,
              name,
              host,
              trafficPerMonth,
              active
          }
          ... on AddNodeInputError {
            name,
            trafficPerMonth,
            host,
            active
          }
        }
    }

Based on this GraphQL - Using same field names in different types within union, It seems the only property way to is to create an alias for each field. it works, but seem stupid.

mutation ($input: AddNodeInput!){
        addNode(input: $input){
            ... on Node {
                nodeId,
                icon,
                name,
                host,
                trafficPerMonth,
                active
            }
            ... on AddNodeInputError {
                name_msg: name,
                trafficPerMonth_msg: trafficPerMonth,
                host_msg: host,
                active_msg: active,
            }
        }
    }