Gorm:外键约束（属于）

我是Gorm的新手，我得到了以下错误。当我要插入记录时。我尝试了很多方法，但都无法解决它，我也用谷歌搜索了一下，但都找不到。错误是

pq:insert或update on table“user\u info”违反外键约束“user\u info\u country\u code\u fkey”

，如何解决此问题，我添加了我的实体并查询了我在此处遗漏的内容，提前感谢

实体

type User struct {
    gorm.Model
    CountryCode     string
    Country         Country `gorm:"foreignKey:CountryCode"`
    FirstName       string
    LastName        string
}

func (User) TableName() string {
    return "user_info"
}

type Country struct {
    gorm.Model
    CountryCode   string
    CountryName   string
    ContinentName string
}

func (Country) TableName() string {
    return "country_info"
}

质疑

CREATE TABLE IF NOT EXISTS "country_info" (
  "id" bigserial NOT NULL,
  "country_code" VARCHAR(50) UNIQUE NOT NULL,
  "country_name" VARCHAR(250) UNIQUE not null,
  "continent_name" VARCHAR(250) not null,
  "created_at" TIMESTAMP NOT NULL,
  "updated_at" TIMESTAMP NOT NULL,
  "deleted_at" TIMESTAMP NULL,
  PRIMARY KEY ("id")
) WITH (
  OIDS=FALSE
);

CREATE TABLE IF NOT EXISTS "user_info" (
  "id" bigserial NOT NULL,
  "country_code" VARCHAR(50) REFERENCES country_info ("country_code"),
  "first_name" VARCHAR(50) NOT NULL,
  "last_name" VARCHAR(50) NOT NULL,
  "created_at" TIMESTAMP NOT NULL,
  "updated_at" TIMESTAMP NOT NULL,
  "deleted_at" TIMESTAMP NULL,
  PRIMARY KEY ("id")
)WITH (
  OIDS=FALSE
);