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This exception has no message.
java.lang.NullPointerException: 	at com.sun.tools.javafx.antlr.v3Walker.module(v3Walker.java:294)	at com.sun.tools.javafx.antlr.JavafxSyntacticAnalysis.parse(JavafxSyntacticAnalysis.java:82)	at com.sun.tools.javafx.main.JavafxCompiler.parse(JavafxCompiler.java:478)	at com.sun.tools.javafx.main.JavafxCompiler.parse(JavafxCompiler.java:519)	at com.sun.tools.javafx.main.JavafxCompiler.parseFiles(JavafxCompiler.java:826)	at com.sun.tools.javafx.api.JavafxcTaskImpl.parse(JavafxcTaskImpl.java:196)	at org.netbeans.api.javafx.source.JavaFXSource.moveToPhase(JavaFXSource.java:221)	at org.netbeans.api.javafx.source.CompilationInfoImpl.toPhase(CompilationInfoImpl.java:129)	at org.netbeans.api.javafx.source.CompilationController.toPhase(CompilationController.java:72)	at org.netbeans.modules.javafx.source.scheduler.CompilationJob.run(CompilationJob.java:186)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)	at java.util.concurrent.FutureTask.run(FutureTask.java:138)	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)	at java.lang.Thread.run(Thread.java:619)