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new Chart(document.getElementById("location").getContext("2d")).Bar(barChartData2**)**,{
showTooltip: true,
tooltipTemplate: "<%= value %>",
//Option for title font size in pixels
tooltipTitleFontSize: 14,
//Option for tooltip title color
tooltipTitleFontColor: "#eee",
});
See the above code….are you missing a parenthesis after barChartData2?
Source:stackexchange.com