Error while running standard area-negative chart

[grrakesh4769]

Trace:
org.mozilla.javascript.EcmaError: TypeError: Cannot find function replace in object 86.83333333333333. (env.rhino.1.2.35.js#8139)
at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3951)
at org.mozilla.javascript.ScriptRuntime.constructError(ScriptRuntime.java:3929)
at org.mozilla.javascript.ScriptRuntime.typeError(ScriptRuntime.java:3962)
at org.mozilla.javascript.ScriptRuntime.typeError2(ScriptRuntime.java:3981)
at org.mozilla.javascript.ScriptRuntime.notFunctionError(ScriptRuntime.java:4053)
at org.mozilla.javascript.ScriptRuntime.getPropFunctionAndThisHelper(ScriptRuntime.java:2425)
at org.mozilla.javascript.ScriptRuntime.getPropFunctionAndThis(ScriptRuntime.java:2407)
at org.mozilla.javascript.Interpreter.interpretLoop(Interpreter.java:1322)
at script(env.rhino.1.2.35.js:8139)
at org.mozilla.javascript.Interpreter.interpret(Interpreter.java:815)
at org.mozilla.javascript.InterpretedFunction.call(InterpretedFunction.java:109)
at org.mozilla.javascript.ScriptableObject$GetterSlot.getValue(ScriptableObject.java:312)
at org.mozilla.javascript.ScriptableObject.get(ScriptableObject.java:472)
at org.mozilla.javascript.IdScriptableObject.get(IdScriptableObject.java:334)
at org.mozilla.javascript.ScriptableObject.getProperty(ScriptableObject.java:2269)
at org.mozilla.javascript.ScriptRuntime.getObjectProp(ScriptRuntime.java:1514)
at org.mozilla.javascript.ScriptRuntime.getObjectProp(ScriptRuntime.java:1507)
at org.mozilla.javascript.Interpreter.interpretLoop(Interpreter.java:1240)
at script(highcharts.src.js:11380)
at script(highcharts.src.js:12031)
at script(highcharts.src.js:10933)
at script(data.src.js:810)
at script(highcharts.src.js:609)
at script(highcharts.src.js:10856)
at script(highcharts.src.js:10833)
at script.renderSVGFromObject(svg-renderer-highcharts.js:9)
at script.renderSVGFromJson(svg-renderer-highcharts.js:16)
at org.mozilla.javascript.Interpreter.interpret(Interpreter.java:815)
at org.mozilla.javascript.InterpretedFunction.call(InterpretedFunction.java:109)
at org.mozilla.javascript.ContextFactory.doTopCall(ContextFactory.java:393)
at org.mozilla.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3282)
at org.mozilla.javascript.InterpretedFunction.call(InterpretedFunction.java:107)
at org.mozilla.javascript.Context$1.run(Context.java:490)
at org.mozilla.javascript.Context.call(Context.java:501)
at org.mozilla.javascript.Context.call(Context.java:488)
at org.mozilla.javascript.ScriptableObject.callMethod(ScriptableObject.java:2609)
at gr.highcharts.export.HighchartsSVGGenerator$2.run(HighchartsSVGGenerator.java:99)
at org.mozilla.javascript.Context.call(Context.java:501)
at org.mozilla.javascript.ContextFactory.call(ContextFactory.java:503)
at gr.highcharts.export.HighchartsSVGGenerator.generateChartSvg(HighchartsSVGGenerator.java:94)
at gr.highcharts.export.HighchartsSVGGenerator.generateChartSvg(HighchartsSVGGenerator.java:114)
at gr.highcharts.export.HighchartsChart.updateSVG(HighchartsChart.java:49)
at gr.highcharts.export.HighchartsChart.(HighchartsChart.java:42)
at gr.highcharts.export.Main.main(Main.java:24)
Exception in thread "main" java.lang.NullPointerException
at java.io.StringReader.(StringReader.java:50)
at gr.highcharts.export.HighchartsChart.storeAsImage(HighchartsChart.java:74)
at gr.highcharts.export.HighchartsChart.storeAsImage(HighchartsChart.java:103)
at gr.highcharts.export.Main.main(Main.java:24)

[grrakesh4769]

Issue occurs from these lines :
get offsetWidth(){ return Number((this.style.width || '').replace("px","")); }
from env.rhino.1.2.35.js;
Seemingly width is a number and not an string object