JS Error: Cannot read property 'length' of null at e.calculationCoordinatesForTooltipDrawing

[uve]

Message: TypeError
Stack Trace:
TypeError: Cannot read property 'length' of null at e.calculationCoordinatesForTooltipDrawing (:21:2055) at HTMLBodyElement. (:20:29572) at HTMLBodyElement.__onmouseover (:15:17547)
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TypeError: Cannot read property 'length' of null at e.calculationCoordinatesForTooltipDrawing (:21:2055) at HTMLBodyElement. (:20:31676) at HTMLBodyElement.__onmouseover (:15:17547)
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TypeError: Cannot read property 'length' of null at e.calculationCoordinatesForTooltipDrawing (:21:2055) at SVGEllipseElement. (:20:26576) at SVGEllipseElement.__onmouseover (:15:17547)
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TypeError: Cannot read property 'length' of null at e.calculationCoordinatesForTooltipDrawing (:21:2055) at SVGRectElement. (:20:28042) at SVGRectElement.__onmouseover (:15:17547)
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TypeError: Cannot read property 'length' of null at e.calculationCoordinatesForTooltipDrawing (:21:2055) at SVGTextElement. (:20:30344) at SVGTextElement.__onmouseover (:15:17547)
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TypeError: Cannot read property 'length' of null at e.calculationCoordinatesForTooltipDrawing (:21:2055) at SVGTextElement. (:21:465) at SVGTextElement.__onmouseover (:15:17547)
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TypeError: Cannot read property 'length' of null at e.calculationCoordinatesForTooltipDrawing (:21:2110) at HTMLBodyElement. (:20:29572) at HTMLBodyElement.__onmouseover (:15:17547)
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TypeError: Cannot read property 'length' of null at e.calculationCoordinatesForTooltipDrawing (:21:2110) at HTMLBodyElement. (:20:31676) at HTMLBodyElement.__onmouseover (:15:17547)
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TypeError: Cannot read property 'length' of null at e.calculationCoordinatesForTooltipDrawing (:21:2110) at SVGEllipseElement. (:20:26576) at SVGEllipseElement.__onmouseover (:15:17547)
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TypeError: Cannot read property 'length' of null at e.calculationCoordinatesForTooltipDrawing (:21:2110) at SVGRectElement. (:20:28042) at SVGRectElement.__onmouseover (:15:17547)
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TypeError: Cannot read property 'length' of null at e.calculationCoordinatesForTooltipDrawing (:21:2239) at HTMLBodyElement. (:20:29572) at HTMLBodyElement.__onmouseover (:15:17547)
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TypeError: Cannot read property 'length' of null at e.calculationCoordinatesForTooltipDrawing (:21:2239) at HTMLBodyElement. (:20:31676) at HTMLBodyElement.__onmouseover (:15:17547)
Next stack
TypeError: Cannot read property 'length' of null at e.calculationCoordinatesForTooltipDrawing (:21:2239) at SVGEllipseElement. (:20:26576) at SVGEllipseElement.__onmouseover (:15:17547)
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TypeError: Cannot read property 'length' of null at e.calculationCoordinatesForTooltipDrawing (:21:2239) at SVGRectElement. (:20:28042) at SVGRectElement.__onmouseover (:15:17547)
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TypeError: Cannot read property 'length' of null at e.calculationCoordinatesForTooltipDrawing (:21:2239) at SVGTextElement. (:20:30344) at SVGTextElement.__onmouseover (:15:17547)
Next stack
TypeError: Cannot read property 'length' of null at e.calculationCoordinatesForTooltipDrawing (:21:2239) at SVGTextElement. (:21:465) at SVGTextElement.__onmouseover (:15:17547)
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TypeError: Cannot read property 'length' of undefined at e.calculationCoordinatesForTooltipDrawing (:21:2055) at HTMLBodyElement. (:20:29572) at HTMLBodyElement.__onmouseover (:15:17547)
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TypeError: Cannot read property 'length' of undefined at e.calculationCoordinatesForTooltipDrawing (:21:2055) at HTMLBodyElement. (:20:31676) at HTMLBodyElement.__onmouseover (:15:17547)
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TypeError: Cannot read property 'length' of undefined at e.calculationCoordinatesForTooltipDrawing (:21:2055) at SVGRectElement. (:20:28042) at SVGRectElement.__onmouseover (:15:17547)
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TypeError: Cannot read property 'length' of undefined at e.calculationCoordinatesForTooltipDrawing (:21:2110) at HTMLBodyElement. (:20:29572) at HTMLBodyElement.__onmouseover (:15:17547)
Next stack
TypeError: Cannot read property 'length' of undefined at e.calculationCoordinatesForTooltipDrawing (:21:2110) at HTMLBodyElement. (:20:31676) at HTMLBodyElement.__onmouseover (:15:17547)
Next stack
TypeError: Cannot read property 'length' of undefined at e.calculationCoordinatesForTooltipDrawing (:21:2239) at HTMLBodyElement. (:20:29572) at HTMLBodyElement.__onmouseover (:15:17547)
Next stack
TypeError: Cannot read property 'length' of undefined at e.calculationCoordinatesForTooltipDrawing (:21:2239) at HTMLBodyElement. (:20:31676) at HTMLBodyElement.__onmouseover (:15:17547)
Next stack
TypeError: Cannot read property 'length' of undefined at e.calculationCoordinatesForTooltipDrawing (:21:2239) at SVGRectElement. (:20:28042) at SVGRectElement.__onmouseover (:15:17547)