Error in Bar chart: Unknown renderer type

[Tushar Patel]

Hi, I am getting error of Unknown renderer type 

as

Before it was working good. I think after recent update on google chart it cause issue.

Please have a look to my code and help me to debug it.

google.charts.setOnLoadCallback();

var data = google.visualization.arrayToDataTable(data_res.data);

 var options = {

 chart: {

   title: '',

   subtitle: '',

 },

  colors: ['#050896','#468A3D','#E67712','#1962AA','#89519C','#D94810','#A72B4E','#6765C5','#212529'],

   bars: 'vertical' // Required for Material Bar Charts.

 };

 var chart = new google.charts.Bar(document.getElementById('barchart_material'));

 chart.draw(data, google.charts.Bar.convertOptions(options));

in data_res.data I am getting json resonse like,

"message": [

    [

      "Months",

      "2016-2017",

      "2017-2018",

      "2018-2019",

      "2019-2020"

    ],

    [

      "August",

      33,

      159,

      161,

      87

    ],

    [

      "September",

      46,

      179,

      154,

      105

    ],

    [

      "October",

      45,

      199,

      147,

      116

    ],

    [

      "November",

      49,

      188,

      143,

      117

    ],

    [

      "December",

      45,

      187,

      139,

      114

    ],

    [

      "January",

      59,

      186,

      134,

      116

    ],

    [

      "February",

      87,

      183,

      135,

      110

    ],

    [

      "March",

      104,

      170,

      132,

      0

    ],

    [

      "April",

      99,

      167,

      126,

      0

    ],

    [

      "May",

      86,

      164,

      108,

      0

    ],

    [

      "June",

      11,

      9,

      4,

      0

    ],

    [

      "July",

      4,

      8,

      2,

      0

    ]

  ]

Please check and give me any solution

[Daniel LaLiberte]

If this situation is like the other one(s), you are probably loading the loader (www.gstatic.com/charts/loader.js) more than one time.  So remove the extra ones and it should work fine.  Otherwise, please post a link to a page that demonstrates the problem so we can see it in action.  Also, specify your browser and version of the browser.

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Daniel LaLiberte

dlaliberte@Google.com   Cambridge MA

[Tushar Patel]

Thank you very much for the help.

Yes there was two times I loaded that file and it cause issue.

again thank you very much for fast reply.

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