I am getting an error "Cannot read property 'prototype' of null"

Md Rehan Moazzam

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Mar 2, 2016, 2:35:29 AM3/2/16

to Google Visualization API

I am getting an error "Cannot read property 'prototype' of null" whenever I am trying to create a chart.

The code follows:

// Load the Visualization API and the controls package.

google.charts.load('current', { 'packages': ['controls'] });

// Set a callback to run when the Google Visualization API is loaded.

google.charts.setOnLoadCallback(drawDashboard);

// Callback that creates and populates a data table,

// instantiates a dashboard, a range slider and a pie chart,

// passes in the data and draws it.

function drawDashboard() {

// Create our data table.

var data = google.visualization.arrayToDataTable([

['Name', 'Donuts eaten'],

['Michael', 5],

['Elisa', 7],

['Robert', 3],

['John', 2],

['Jessica', 6],

['Aaron', 1],

['Margareth', 8]

]);

// Create a dashboard.

var dashboard = new google.visualization.Dashboard(

document.getElementById('programmatic_dashboard_div'));

// Create a range slider, passing some options

var donutRangeSlider = new google.visualization.ControlWrapper({

'controlType': 'NumberRangeFilter',

'containerId': 'programmatic_control_div',

'options': {

'filterColumnLabel': 'Donuts eaten'

}

});

// Create a pie chart, passing some options

var pieChart = new google.visualization.ChartWrapper({

'chartType': 'PieChart',

'containerId': 'programmatic_chart_div',

'options': {

'width': 300,

'height': 300,

'pieSliceText': 'value',

'legend': 'right'

}

});

// Establish dependencies, declaring that 'filter' drives 'pieChart',

// so that the pie chart will only display entries that are let through

// given the chosen slider range.

dashboard.bind(donutRangeSlider, pieChart);

// Draw the dashboard.

dashboard.draw(data);

}

</script>

<body>

<tr>

<td>

</td>

</tr>

<tr>

<td>

</td>

</tr>

</table>

</div>

</body>

Error screen from chrome console is attached. Please help me out its kind of urgent

ErrorChart.png

Sergey Grabkovsky

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Mar 2, 2016, 10:27:26 AM3/2/16

to Google Visualization API

Hi,

You are experiencing the issues caused by caching and propagation delays of our latest release. These issues should fix themselves eventually (probably in a few days). In the meantime, you can workaround it by explicitly specifying a version, such as '43' or '44' instead of 'current' or 'upcoming' as you currently do.

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Sergey Grabkovsky
•
Software Engineer
•
Google, Inc
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gra...@google.com

Md Rehan Moazzam

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Mar 7, 2016, 7:41:57 AM3/7/16

to Google Visualization API

Thanks Sergey. I followed the same and its working fine. :)

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	•	Sergey Grabkovsky
	•	Software Engineer
	•	Google, Inc
	•	gra...@google.com