为什么我直接引用了，赋值OPTION，先直接显示，但是报错。Uncaught TypeError: Cannot read property 'type' of undefined
at makeKey (modelHelper.js?402a:322)
at eval (modelHelper.js?402a:212)
at ExtendedClass.eval (Global.js?46d7:517)
at Array.forEach (<anonymous>)
at each (util.js?fe0c:300)
at ExtendedClass.eachSeries (Global.js?46d7:514)
at collectSeriesInfo (modelHelper.js?402a:202)
at Object.collect (modelHelper.js?402a:74)
at Object.eval [as overallReset] (axisPointer.js?00a5:74)
at Task.overallTaskReset [as _reset] (Scheduler.js?bee6:445)
