Error koneksi golang dengan mysql menggunakan gorm

ketika mengikuti tutorial koneksi database Golang menggunakan Gorm, saya mencobanya... tapi muncul error seperti ini

kira kira letak kesalahannya dimana ya? Terima kasih

package main

import (
	"github.com/gin-gonic/gin"
	"github.com/jinzhu/gorm"
	_ "github.com/jinzhu/gorm/dialects/mysql"
)

//Article used to declare articles models from database
type Article struct {
	gorm.Model
	Title string
	Slug  string `gorm:"unique_index"`
	Desc  string `sql:"type:text;"`
}

//DB is global declarated for all func
var DB *gorm.DB

func main() {
	var err error
	DB, err := gorm.Open("mysql", "root:@/db_train_go?charset=utf8&parseTime=True&loc=Local")

	if err != nil {
		panic("Failed to connect database")
	}

	defer DB.Close()

	//migrate the schema
	DB.AutoMigrate(&Article{})

	router := gin.Default()

	apiV1 := router.Group("/api/v1/")
	{
		articles := apiV1.Group("/article")
		{
			articles.GET("/", getHome)
			articles.GET("/:title", getArticle)
			articles.POST("/", postArticle)
		}
	}

	router.Run()
}

func getHome(c *gin.Context) {
	var article Article
	// DB.Find(&article)
	DB.Find(&article)

	c.JSON(200, gin.H{
		"status": 200,
		"data":   article,
	})
}