Csharp 当我try 在与XAMP的MySQL服务器连接的ASP.NET核心应用程序中添加迁移时出现错误

以下是我收到的错误:

无法创建类型为‘’的‘DbContext’.找不到异常‘方法:’VOID CoreTypeMappingPARAMETERS..ctor(系统类型，Microsoft.EntityFrameworkCore.Storage.ValueConversion.ValueConverter，Microsoft.EntityFrameworkCore.ChangeTracking.ValueComparer，Microsoft.EntityFrameworkCore.ChangeTracking.ValueComparer，Microsoft.EntityFrameworkCore.ChangeTracking.ValueComparer，System.Func`3&lt；Microsoft.EntityFrameworkCore.Metadata.IProperty，Microsoft.EntityFrameworkCore.Metadata.IEntityType，Microsoft.EntityFrameworkCore.ValueGeneration.ValueGenerator&gt；)‘.’在try 创建实例时引发.有关设计时支持的不同模式，请参见https://go.microsoft.com/fwlink/?linkid=851728

连接

"dbcs": "Server=localhost;Port=3307;Database=asp1;user=root;password=;" //this is located in json file
var connectionString = builder.Configuration.Get连接String("dbcs");
builder.Services.AddDbContext<StudentDbContext>(item =>
{
    item.UseMySql(connectionString,ServerVersion.AutoDetect(connectionString));
});
var app = builder.Build();

DbContext:

using Microsoft.EntityFrameworkCore;

namespace WebApplication2.Models
{
    public class StudentDbContext:DbContext
    {
        public StudentDbContext(DbContextOptions op) : base(op)
        {    
        }

        public DbSet<StudentModel> Students { get; set; }
    }
}

型号类别:

using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace WebApplication2.Models
{
    public class StudentModel
    {
        [Key]
        public int Id { get; set; }
        [Required(ErrorMessage = "Fill the name")]
        [Column("Student Name", TypeName="varchar(20)")]
        public string Name { get; set; }   
        public int Age { get; set; }

        public string Gender { get; set; }
    }
}

我如何才能解决这个错误？这适用于.NET 8和EF Core 8