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java.lang.NullPointerException at java.io.Reader.<init>(Reader.java:78) at java.io.InputStreamReader.<init>(InputStreamReader.java:97) at com.github.javafxd3.javafx.JavaFxD3Browser.getJavaScriptLibraryFromFile(JavaFxD3Browser.java:252) at com.github.javafxd3.javafx.JavaFxD3Browser.injectD3(JavaFxD3Browser.java:163) at com.github.javafxd3.javafx.JavaFxD3Browser.injectJavaScriptLibraries(JavaFxD3Browser.java:151) at com.github.javafxd3.javafx.JavaFxD3Browser.lambda$registerLoadingFinishedHook$1(JavaFxD3Browser.java:134) at com.sun.javafx.binding.ExpressionHelper$SingleChange.fireValueChangedEvent(ExpressionHelper.java:182) at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(ExpressionHelper.java:81) at javafx.beans.property.ReadOnlyObjectPropertyBase.fireValueChangedEvent(ReadOnlyObjectPropertyBase.java:74) at javafx.beans.property.ReadOnlyObjectWrapper.fireValueChangedEvent(ReadOnlyObjectWrapper.java:102) at javafx.beans.property.ObjectPropertyBase.markInvalid(ObjectPropertyBase.java:112) at javafx.beans.property.ObjectPropertyBase.set(ObjectPropertyBase.java:146) at javafx.scene.web.WebEngine$LoadWorker.updateState(WebEngine.java:1260) at javafx.scene.web.WebEngine$LoadWorker.dispatchLoadEvent(WebEngine.java:1371) at javafx.scene.web.WebEngine$LoadWorker.access$1200(WebEngine.java:1253) at javafx.scene.web.WebEngine$PageLoadListener.dispatchLoadEvent(WebEngine.java:1240) at com.sun.webkit.WebPage.fireLoadEvent(WebPage.java:2400) at com.sun.webkit.WebPage.fwkFireLoadEvent(WebPage.java:2244) at com.sun.webkit.Timer.twkFireTimerEvent(Native Method) at com.sun.webkit.Timer.fireTimerEvent(Timer.java:83) at com.sun.webkit.Timer.notifyTick(Timer.java:64) at javafx.scene.web.WebEngine$PulseTimer.lambda$static$45(WebEngine.java:1201) at com.sun.javafx.tk.Toolkit.lambda$runPulse$30(Toolkit.java:355) at java.security.AccessController.doPrivileged(Native Method) at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:354) at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:381) at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:510) at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:490) at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$404(QuantumToolkit.java:319) at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95) at com.sun.glass.ui.win.WinApplication._runLoop(Native Method) at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191) at java.lang.Thread.run(Thread.java:745)