javascript - C3js - Uncaught TypeError: Cannot read property 'data' of null -


the error message re-created in demo:

http://plnkr.co/edit/6tok16u287skhqpsramx?p=preview

var chart = c3.generate({   data: {       "columns":  [["b1", 1], ["b2", 2]],       "type": "donut",       onclick: onclick,   },   donut: { "title": "iris petal width" } });  function onclick(){   chart.load({       columns: [['a_b1', 1], ['b_b1', 2]],       unload: ['b1', 'b2']   }); }

the documentation function here:

http://c3js.org/reference.html#api-load

do think i'm using wrong or it's bug in library?

--reponse comment-- error occurs in fiddle when section of donut clicked. enter image description here

if watch transition animation closely can see hesitate when rendering different sections of donut. these errors occur after rendering.


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