JavaScript Data GridAG Grid Error #265

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Full Error Text

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Unable to infer chart data type for column 'undefined' if first data entry is null. Please specify "chartDataType", or a "cellDataType" in the column definition. For more information, see https://www.ag-grid.com/archive/33.1.0/javascript-data-grid/integrated-charts-range-chart#coldefchartdatatype .
To show this error text in the dev console, import the ValidationModule.

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