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Can't open the demo with the SceneBuilder

See original GitHub issue

When I tried to open main.fxml in the Demo folder with SceneBuilder, I got this error message. How to fix this issue?

`java.io.IOException: javafx.fxml.LoadException: /C:/Users/test/Documents/workspace/JFoenix/demo/resources/fxml/Main.fxml

at com.oracle.javafx.scenebuilder.kit.fxom.FXOMLoader.load(FXOMLoader.java:92)
at com.oracle.javafx.scenebuilder.kit.fxom.FXOMDocument.<init>(FXOMDocument.java:82)
at com.oracle.javafx.scenebuilder.kit.fxom.FXOMDocument.<init>(FXOMDocument.java:97)
at com.oracle.javafx.scenebuilder.kit.editor.EditorController.updateFxomDocument(EditorController.java:2384)
at com.oracle.javafx.scenebuilder.kit.editor.EditorController.setFxmlTextAndLocation(EditorController.java:664)
at com.oracle.javafx.scenebuilder.app.DocumentWindowController.loadFromFile(DocumentWindowController.java:381)
at com.oracle.javafx.scenebuilder.app.SceneBuilderApp.performOpenFiles(SceneBuilderApp.java:549)
at com.oracle.javafx.scenebuilder.app.SceneBuilderApp.handleOpenFilesAction(SceneBuilderApp.java:419)
at com.oracle.javafx.scenebuilder.app.SceneBuilderApp.handleLaunch(SceneBuilderApp.java:399)
at com.oracle.javafx.scenebuilder.app.AppPlatform.requestStartGeneric(AppPlatform.java:139)
at com.oracle.javafx.scenebuilder.app.AppPlatform.requestStart(AppPlatform.java:106)
at com.oracle.javafx.scenebuilder.app.SceneBuilderApp.start(SceneBuilderApp.java:349)
at com.sun.javafx.application.LauncherImpl.lambda$launchApplication1$159(LauncherImpl.java:863)
at com.sun.javafx.application.LauncherImpl$$Lambda$55/468253410.run(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$runAndWait$172(PlatformImpl.java:326)
at com.sun.javafx.application.PlatformImpl$$Lambda$48/880504706.run(Unknown Source)
at com.sun.javafx.application.PlatformImpl.lambda$null$170(PlatformImpl.java:295)
at com.sun.javafx.application.PlatformImpl$$Lambda$50/927958254.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.application.PlatformImpl.lambda$runLater$171(PlatformImpl.java:294)
at com.sun.javafx.application.PlatformImpl$$Lambda$49/753051148.run(Unknown Source)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$145(WinApplication.java:101)
at com.sun.glass.ui.win.WinApplication$$Lambda$38/172623023.run(Unknown Source)
at java.lang.Thread.run(Thread.java:745)

Caused by: javafx.fxml.LoadException: /C:/Users/test/Documents/workspace/JFoenix/demo/resources/fxml/Main.fxml

at javafx.fxml.FXMLLoader.constructLoadException(FXMLLoader.java:2605)
at javafx.fxml.FXMLLoader.importClass(FXMLLoader.java:2852)
at javafx.fxml.FXMLLoader.processImport(FXMLLoader.java:2696)
at javafx.fxml.FXMLLoader.processProcessingInstruction(FXMLLoader.java:2665)
at javafx.fxml.FXMLLoader.loadImpl(FXMLLoader.java:2521)
at javafx.fxml.FXMLLoader.load(FXMLLoader.java:2429)
at com.oracle.javafx.scenebuilder.kit.fxom.FXOMLoader.load(FXOMLoader.java:89)
... 25 more

Caused by: java.lang.ClassNotFoundException: de.jensd.fx.fontawesome.AwesomeIcon de.jensd.fx.fontawesome.AwesomeIcon at java.lang.ClassLoader.findClass(ClassLoader.java:530) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at javafx.fxml.FXMLLoader.loadTypeForPackage(FXMLLoader.java:2920) at javafx.fxml.FXMLLoader.loadType(FXMLLoader.java:2909) at javafx.fxml.FXMLLoader.importClass(FXMLLoader.java:2850) … 30 more `