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    • java.lang.RuntimeException: Exception in Application start method at com.sun.javafx.application.LauncherImpl.launchApplication1( at com.sun.javafx.application.LauncherImpl.access$000( at com.sun.javafx.application.LauncherImpl$ at Caused by: java.lang.NullPointerException: Input stream must not be null at javafx.scene.image.Image.validateInputStream( at javafx.scene.image.Image.<init>( at javafxapplication1.guest.addHBox( at javafxapplication1.guest.start( at com.sun.javafx.application.LauncherImpl$ at com.sun.javafx.application.PlatformImpl$ at com.sun.javafx.application.PlatformImpl$4$ at com.sun.javafx.application.PlatformImpl$4$ at Method) at com.sun.javafx.application.PlatformImpl$ at$ at Method) at$100( at$3$ ... 1 more

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