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java.util.ConcurrentModificationException: null	at java.util.TreeMap$PrivateEntryIterator.nextEntry(TreeMap.java:1115)	at java.util.TreeMap$KeyIterator.next(TreeMap.java:1169)	at com.google.javascript.jscomp.ComposeWarningsGuard.disables(ComposeWarningsGuard.java:130)	at com.google.javascript.jscomp.CompilerOptions.disables(CompilerOptions.java:1118)	at com.google.javascript.jscomp.Compiler.initOptions(Compiler.java:290)	at pl.matisoft.soy.ajax.process.google.GoogleClosureOutputProcessor.process(GoogleClosureOutputProcessor.java:52)	at pl.matisoft.soy.ajax.SoyAjaxController.prepareResponseFor(SoyAjaxController.java:181)	at pl.matisoft.soy.ajax.SoyAjaxController.compileJs(SoyAjaxController.java:102)	at pl.matisoft.soy.ajax.SoyAjaxController.getJsForTemplateFilesHash(SoyAjaxController.java:89)