java.lang.AssertionError at com.sun.tools.javac.util.Assert.error(Assert.java:155) at com.sun.tools.javac.util.Assert.check(Assert.java:46) at com.sun.tools.javac.comp.DeferredAttr$4.complete(DeferredAttr.java:340) at com.sun.tools.javac.comp.ArgumentAttr$ArgumentType.complete(ArgumentAttr.java:361) at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:302) at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:289) at com.sun.tools.javac.comp.DeferredAttr$RecoveryDeferredTypeMap.recover(DeferredAttr.java:974) at com.sun.tools.javac.comp.DeferredAttr$RecoveryDeferredTypeMap.typeOf(DeferredAttr.java:945) at com.sun.tools.javac.comp.DeferredAttr$DeferredTypeMap.visitType(DeferredAttr.java:910) at com.sun.tools.javac.comp.DeferredAttr$RecoveryDeferredTypeMap.visitType(DeferredAttr.java:933) at com.sun.tools.javac.comp.DeferredAttr$DeferredTypeMap.visitType(DeferredAttr.java:896) at com.sun.tools.javac.code.Type.accept(Type.java:214) at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:4533) at com.sun.tools.javac.code.Type$TypeMapping.lambda$visit$12(Type.java:235) at com.sun.tools.javac.util.List.map(List.java:425) at com.sun.tools.javac.code.Type$TypeMapping.visit(Type.java:235) at com.sun.tools.javac.code.Type$TypeMapping.visitMethodType(Type.java:287) at com.sun.tools.javac.comp.DeferredAttr$RecoveryDeferredTypeMap.visitMethodType(DeferredAttr.java:963) at com.sun.tools.javac.comp.DeferredAttr$RecoveryDeferredTypeMap.visitMethodType(DeferredAttr.java:933) at com.sun.tools.javac.code.Type$MethodType.accept(Type.java:1459) at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:4533) at com.sun.tools.javac.code.Type$TypeMapping.visitForAll(Type.java:308) at com.sun.tools.javac.code.Type$TypeMapping.visitForAll(Type.java:227) at com.sun.tools.javac.code.Type$ForAll.accept(Type.java:1771) at com.sun.tools.javac.code.Types$DefaultTypeVisitor.visit(Types.java:4533) at com.sun.tools.javac.code.Type.map(Type.java:321) at com.sun.tools.javac.comp.Attr.checkMethodIdInternal(Attr.java:3861) at com.sun.tools.javac.comp.Attr.checkMethodId(Attr.java:3839) at com.sun.tools.javac.comp.Attr.checkId(Attr.java:3826) at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3711) at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:2075) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1935) at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1604) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.visitLambda(Attr.java:2581) at com.sun.tools.javac.tree.JCTree$JCLambda.accept(JCTree.java:1777) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.DeferredAttr$4.complete(DeferredAttr.java:341) at com.sun.tools.javac.comp.ArgumentAttr$ArgumentType.complete(ArgumentAttr.java:361) at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:302) at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:289) at com.sun.tools.javac.comp.Resolve$MethodResultInfo.check(Resolve.java:1016) at com.sun.tools.javac.comp.Resolve$4.checkArg(Resolve.java:839) at com.sun.tools.javac.comp.Resolve$AbstractMethodCheck.argumentsAcceptable(Resolve.java:744) at com.sun.tools.javac.comp.Resolve$4.argumentsAcceptable(Resolve.java:848) at com.sun.tools.javac.comp.Resolve.rawInstantiate(Resolve.java:588) at com.sun.tools.javac.comp.Resolve.checkMethod(Resolve.java:614) at com.sun.tools.javac.comp.Attr.checkMethod(Attr.java:4167) at com.sun.tools.javac.comp.Attr.checkIdInternal(Attr.java:3953) at com.sun.tools.javac.comp.Attr.checkMethodIdInternal(Attr.java:3860) at com.sun.tools.javac.comp.Attr.checkMethodId(Attr.java:3839) at com.sun.tools.javac.comp.Attr.checkId(Attr.java:3826) at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3711) at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:2075) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1935) at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1604) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3586) at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:2075) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1935) at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1604) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.visitReturn(Attr.java:1787) at com.sun.tools.javac.tree.JCTree$JCReturn.accept(JCTree.java:1516) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:705) at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:729) at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1211) at org.netbeans.lib.nbjavac.services.NBAttr.visitBlock(NBAttr.java:82) at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:990) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:705) at com.sun.tools.javac.comp.Attr.visitIf(Attr.java:1683) at com.sun.tools.javac.tree.JCTree$JCIf.accept(JCTree.java:1391) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:705) at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:729) at com.sun.tools.javac.comp.Attr.visitSwitch(Attr.java:1359) at com.sun.tools.javac.tree.JCTree$JCSwitch.accept(JCTree.java:1189) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:705) at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:729) at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1211) at org.netbeans.lib.nbjavac.services.NBAttr.visitBlock(NBAttr.java:82) at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:990) at com.sun.tools.javac.comp.Attr$ResultInfo.attr(Attr.java:494) at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:635) at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:705) at com.sun.tools.javac.comp.Attr.attribStatToTree(Attr.java:412) at com.sun.tools.javac.api.JavacTrees.attribStatToTree(JavacTrees.java:975) at com.sun.tools.javac.api.JavacTrees.getAttrContext(JavacTrees.java:935) at com.sun.tools.javac.api.JavacTrees.getScope(JavacTrees.java:794) at com.sun.tools.javac.api.JavacTrees.getScope(JavacTrees.java:156) at org.netbeans.modules.java.completion.BaseTask.getEnvImpl(BaseTask.java:375) at org.netbeans.modules.java.completion.BaseTask.getCompletionEnvironment(BaseTask.java:265) at org.netbeans.modules.java.completion.JavaTooltipTask.resolve(JavaTooltipTask.java:111) at org.netbeans.modules.java.completion.BaseTask.run(BaseTask.java:92) at org.netbeans.modules.java.completion.JavaTooltipTask.run(JavaTooltipTask.java:74) at org.netbeans.modules.parsing.impl.TaskProcessor.callUserTask(TaskProcessor.java:609) at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:153) at org.netbeans.modules.parsing.api.ParserManager$UserTaskAction.run(ParserManager.java:137) at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:204) at org.netbeans.modules.parsing.impl.TaskProcessor$2.call(TaskProcessor.java:201) at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176) at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360) at org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:141) at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:88) at org.netbeans.modules.parsing.impl.TaskProcessor.runUserTask(TaskProcessor.java:201) at org.netbeans.modules.parsing.api.ParserManager.parse(ParserManager.java:104) at org.netbeans.modules.editor.java.JavaCompletionProvider$JavaCompletionQuery.query(JavaCompletionProvider.java:261) at org.netbeans.spi.editor.completion.support.AsyncCompletionTask.run(AsyncCompletionTask.java:223) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443) at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68) at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058) Caused: org.openide.util.RequestProcessor$FastItem: task failed due to: java.lang.AssertionError