Error Number:2705,State:4,Class:16 Code first approach

Question

currently I'm using MYSQL 2019 (EF 3.1)and Visual Studio 2019 ASP . Net Core 3.1 version.

This is my model:

public class User
{
    public int Id { get; set; }

    \[Required\]
    public string Username { get; set; }
    \[Required\]
    public string Password { get; set; }
    public string Email { get; set; }
    public string Address { get; set; }
   
    \[Required\]
    public DateTime  DateCreated { get; set; }
    \[Required\]
    public DateTime DateUpdated { get; set; }
    public bool IsAdmin { get; set; }

}

I made a mistake, I didn't notice at the moment that I have two migrations for the same property(DateUpdated),and now I can't do new migration.

This is my fourth migration:

protected override void Up(Migration Builder migrationBuilder) { migrationBuilder.AddColumn<DateTime>( name: "DateUpdated", table: "MyBlog", nullable: true); }

    protected override void Down(Migration Builder migration Builder)
    {
        migrationBuilder.DropColumn(
            name: "DateUpdated",
            table: "MyBlog");
    }

and тhis is my seventh migration:

protected override void Up(MigrationBuilder migrationBuilder) { migrationBuilder.AddColumn<DateTime>( name: "DateUpdated", table: "Users", nullable: false, defaultValue: new DateTime(1, 1, 1, 0, 0, 0, 0, DateTimeKind.Unspecified));

        migrationBuilder.AddColumn\<bool\>(
            name: "IsAdmin",
            table: "Users",
            nullable: false,
            defaultValue: false);
    }

    protected override void Down(MigrationBuilder migrationBuilder)
    {
        migrationBuilder.DropColumn(
            name: "DateUpdated",
            table: "Users");

        migrationBuilder.DropColumn(
            name: "IsAdmin",
            table: "Users");
    }.

It gives me this error:

Error Number:2705,State:4,Class:16
Column names in each table must be unique. Column name 'Date Updated' in table 'Users' is specified more than once.

I understand where my mistake is, but how can I solve this?