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Blank PNG image is shown with toBase64Image() function
If a blank image is shown with the toBase64Image() function, you need to use the following to work on it correctly:
animation: { duration: 2000, onComplete: function (animation) { this.toBase64Image(); } }
With that, you can also use another fix. Call save64Img(myChart.toBase64Image()) over an additional callback and set it like this:
myLine = { onAnimationComplete: function () { save64Img(myChart.toBase64Image()); } }
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