I’m trying to create Migration with Sea ORM, but getting an error when running cargo run up command from the migration folder.
Migration looks like this:

use sea_orm_migration::prelude::*;
use crate::m20240521_000001_create_table::User;

#[derive(DeriveMigrationName)]
pub struct Migration;

#[async_trait::async_trait]
impl MigrationTrait for Migration {
    async fn up(&self, manager: &SchemaManager) -> Result<(), DbErr> {

        manager
            .create_table(
                Table::create()
                    .table(UserCountry::Table)
                    .if_not_exists()
                    .col(
                        ColumnDef::new(UserCountry::Id)
                            .integer()
                            .not_null()
                            .auto_increment()
                            .primary_key(),
                    )
                    .col(ColumnDef::new(UserCountry::UserId).integer().not_null())
                    .col(ColumnDef::new(UserCountry::Country).string().not_null())
                    .col(ColumnDef::new(UserCountry::ApplyToAllSites).boolean().not_null())
                    .foreign_key(
                        ForeignKey::create()
                            .name("fk-user")
                            .from(UserCountry::Table, UserCountry::UserId)
                            .to(User::Table, User::Id),
                    )
                    .to_owned(),
            )
            .await;

            manager
            .create_index(
                Index::create()
                    .if_not_exists()
                    .name("idx_user_id")
                    .table(UserCountry::Table)
                    .col(UserCountry::UserId)                        
                    .to_owned(),
            )
            .await?;
    }

    async fn down(&self, manager: &SchemaManager) -> Result<(), DbErr> {

        manager
            .drop_table(Table::drop().table(UserCountry::Table).to_owned())
            .await
    }
}

#[derive(DeriveIden)]
enum UserCountry {
    Table,
    Id,
    UserId,
    Country,
    ApplyToAllSites
}

The error I’m receiving is

7 | #[async_trait::async_trait]
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `Result<(), DbErr>`, found `()`