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via GitHub by ddthanhdat
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java.lang.ClassFormatError: Method getFreeArea in class com/jfoenix/controls/JFXMasonryPane$Layout has illegal modifiers: 0x1
java.lang.ClassFormatError: Method getFreeArea in class com/jfoenix/controls/JFXMasonryPane$Layout has illegal modifiers: 0x1	at java.lang.ClassLoader.defineClass1(Native Method)	at java.lang.ClassLoader.defineClass(ClassLoader.java:760)	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)	at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)	at java.net.URLClassLoader$1.run(URLClassLoader.java:367)	at java.net.URLClassLoader$1.run(URLClassLoader.java:361)	at java.security.AccessController.doPrivileged(Native Method)	at java.net.URLClassLoader.findClass(URLClassLoader.java:360)	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)	at com.jfoenix.controls.JFXMasonryPane.(JFXMasonryPane.java:239)	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)	at java.lang.reflect.Constructor.newInstance(Constructor.java:408)	at java.lang.Class.newInstance(Class.java:433)	at sun.reflect.misc.ReflectUtil.newInstance(ReflectUtil.java:51)	at javafx.fxml.FXMLLoader$InstanceDeclarationElement.constructValue(FXMLLoader.java:1010)	at javafx.fxml.FXMLLoader$ValueElement.processStartElement(FXMLLoader.java:740)	at javafx.fxml.FXMLLoader.processStartElement(FXMLLoader.java:2723)	at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2527)	at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2425)	at com.oracle.javafx.scenebuilder.kit.library.util.JarExplorer.instantiateWithFXMLLoader(JarExplorer.java:105)	at com.oracle.javafx.scenebuilder.kit.library.util.JarExplorer.exploreEntry(JarExplorer.java:146)	at com.oracle.javafx.scenebuilder.kit.library.util.JarExplorer.explore(JarExplorer.java:65)	at com.oracle.javafx.scenebuilder.kit.library.user.LibraryFolderWatcher.exploreAndUpdateLibrary(LibraryFolderWatcher.java:298)	at com.oracle.javafx.scenebuilder.kit.library.user.LibraryFolderWatcher.runDiscovery(LibraryFolderWatcher.java:122)	at com.oracle.javafx.scenebuilder.kit.library.user.LibraryFolderWatcher.run(LibraryFolderWatcher.java:88)	at java.lang.Thread.run(Thread.java:744)