java.lang.IllegalArgumentException: Illegal replacement
   at java.nio.charset.CharsetEncoder.replaceWith(CharsetEncoder.java:285)
   at org.netbeans.api.queries.FileEncodingQuery$ProxyCharset$ProxyEncoder.encodeHead(FileEncodingQuery.java:397)
   at org.netbeans.api.queries.FileEncodingQuery$ProxyCharset$ProxyEncoder.encodeLoop(FileEncodingQuery.java:368)
   at java.nio.charset.CharsetEncoder.encode(CharsetEncoder.java:561)
   at sun.nio.cs.StreamEncoder.flushLeftoverChar(StreamEncoder.java:242)
   at sun.nio.cs.StreamEncoder.implClose(StreamEncoder.java:301)
   at sun.nio.cs.StreamEncoder.close(StreamEncoder.java:149)
   at java.io.OutputStreamWriter.close(OutputStreamWriter.java:233)
   at org.openide.text.DataEditorSupport.saveFromKitToStream(DataEditorSupport.java:570)
   at org.openide.text.CloneableEditorSupport$6.run(CloneableEditorSupport.java:1114)
   at org.netbeans.modules.editor.lib.BeforeSaveTasks$TaskRunnable$1.run(BeforeSaveTasks.java:190)
   at org.netbeans.editor.GuardedDocument.runAtomicAsUser(GuardedDocument.java:347)
   at org.netbeans.modules.editor.lib.BeforeSaveTasks$TaskRunnable.run(BeforeSaveTasks.java:156)
   at org.netbeans.modules.editor.lib.TrailingWhitespaceRemove.runLocked(TrailingWhitespaceRemove.java:102)
   at org.netbeans.modules.editor.lib.BeforeSaveTasks$TaskRunnable.run(BeforeSaveTasks.java:153)
   at org.netbeans.modules.editor.impl.ReformatBeforeSaveTask.runLocked(ReformatBeforeSaveTask.java:124)
   at org.netbeans.modules.editor.lib.BeforeSaveTasks$TaskRunnable.run(BeforeSaveTasks.java:153)
   at org.netbeans.modules.editor.lib.BeforeSaveTasks.runTasks(BeforeSaveTasks.java:130)
   at org.netbeans.modules.editor.lib.BeforeSaveTasks$2.run(BeforeSaveTasks.java:111)
   at org.openide.text.CloneableEditorSupport.saveDocument(CloneableEditorSupport.java:1151)
   at org.openide.text.DataEditorSupport.superSaveDoc(DataEditorSupport.java:602)
   at org.openide.text.DataEditorSupport$SaveImpl.run(DataEditorSupport.java:1315)
   at org.openide.filesystems.EventControl.runAtomicAction(EventControl.java:127)
   at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:609)
   at org.openide.filesystems.FileUtil.runAtomicAction(FileUtil.java:415)
   at org.openide.text.DataEditorSupport.saveDocument(DataEditorSupport.java:598)
   at org.netbeans.modules.maven.grammar.POMDataObject$POMDataEditor$1.save(POMDataObject.java:135)
   at org.netbeans.modules.maven.model.Utilities.saveChanges(Utilities.java:268)
   at org.netbeans.modules.maven.model.Utilities.performPOMModelOperations(Utilities.java:327)
   at org.netbeans.modules.maven.operations.RenameProjectPanel$5.run(RenameProjectPanel.java:273)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1432)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2044)