http: wrote more than the declared Content-Length gin
//自定义logo会造成gin 500-200警告
//engine.Use(favicon.New("./static/logo.png")) // 运行目录下的logo.png
//自定义logo会造成gin 500-200警告
//engine.Use(favicon.New("./static/logo.png")) // 运行目录下的logo.png