java.lang.NullPointerException: Cannot invoke "javafx.scene.control.Hyperlink.setVisited(boolean)" because "this.enLocale" is null
        at gtanks.d.Controller.setRULocale(Controller.java:95)
        at gtanks.d.Controller.lambda$new$0(Controller.java:72)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:456)
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:455)
        at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
        at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
        at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:185)
        at java.base/java.lang.Thread.run(Thread.java:1583)
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException: Cannot invoke "javafx.scene.control.Button.setDisable(boolean)" because "this.playButton" is null
        at gtanks.d.Controller.lambda$lockPlayButton$1(Controller.java:143)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:456)
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:455)
        at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
        at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
        at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:185)
        at java.base/java.lang.Thread.run(Thread.java:1583)
Exception in thread "main" java.lang.RuntimeException: Exception in Application start method
        at com.sun.javafx.application.LauncherImpl.launchApplication1(LauncherImpl.java:893)
        at com.sun.javafx.application.LauncherImpl.lambda$launchApplication$2(LauncherImpl.java:196)
        at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: java.lang.NoClassDefFoundError: com/sun/javafx/css/parser/CSSParser
        at de.jensd.fx.glyphs.GlyphIcon.<clinit>(GlyphIcon.java:49)
        at java.base/jdk.internal.misc.Unsafe.ensureClassInitialized0(Native Method)
        at java.base/jdk.internal.misc.Unsafe.ensureClassInitialized(Unsafe.java:1160)
        at java.base/jdk.internal.reflect.MethodHandleAccessorFactory.ensureClassInitialized(MethodHandleAccessorFactory.java:300)
        at java.base/jdk.internal.reflect.MethodHandleAccessorFactory.newConstructorAccessor(MethodHandleAccessorFactory.java:103)
        at java.base/jdk.internal.reflect.ReflectionFactory.newConstructorAccessor(ReflectionFactory.java:200)
        at java.base/java.lang.reflect.Constructor.acquireConstructorAccessor(Constructor.java:549)
        at java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
        at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:486)
        at javafx.fxml.FXMLLoader$InstanceDeclarationElement.constructValue(FXMLLoader.java:1022)
        at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:759)
        at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2853)
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2649)
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2563)
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3376)
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3332)
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3300)
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3272)
        at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:3248)
        at javafx.fxml.FXMLLoader.load(FXMLLoader.java:3241)
        at gtanks.d.Main.start(Main.java:25)
        at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$9(LauncherImpl.java:839)
        at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$12(PlatformImpl.java:483)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$10(PlatformImpl.java:456)
        at java.base/java.security.AccessController.doPrivileged(AccessController.java:400)
        at com.sun.javafx.application.PlatformImpl.lambda$runLater$11(PlatformImpl.java:455)
        at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
        at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
        at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:185)
        ... 1 more
Caused by: java.lang.ClassNotFoundException: com.sun.javafx.css.parser.CSSParser
        at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:641)
        at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
        at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:526)
        ... 30 more как сисправить