kendo ui - Uncaught TypeError: l.renderElement is not a function -

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i have shared tooltip graph:

            $scope.kissachart.setoptions({                 renderas: 'canvas',                 drag: ondrag,                 dragend: ondragend,                 zoom: onzoom,                 tooltip: {                     visible: true,                     format: "{0:n2}",                     shared: true,                     background: '#add8e6',                     sharedtemplate: createtemplate                 }             });

here template generator :

function createtemplate (val1) {     var template = "";     if (val1 && val1.points && val1.points && val1.points.length > 0) {         template += "<div>";          // construct date         template += "date: ";         template += ((val1.points[0].dataitem.date) ? val1.points[0].dataitem.date : "");         template += " " + ((val1.points[0].dataitem.actualtime) ? val1.points[0].dataitem.actualtime : "");     }     return template; }

when try mouseover data on series, shown :

uncaught typeerror: l.renderelement not function

what have been reason?


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