VSC下调试代码，出错，请教： #20
Description
你好，我没学过什么编程，更没学过GO语言，想调试一下这程序，卡在：
cannot use "github.com/kataras/iris/context".Map literal (type "github.com/kataras/iris/context".Map) as type "github.com/kataras/iris/context".JSON in argument to ctx.JSON
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