scala.reflect.internal.MissingRequirementError: object scala in compiler mirror not found.
   at scala.reflect.internal.MissingRequirementError$.signal(MissingRequirementError.java:17)
   at scala.reflect.internal.MissingRequirementError$.notFound(MissingRequirementError.java:18)
   at scala.reflect.internal.Mirrors$RootsBase$$anonfun$getModuleOrClass$3.apply(Mirrors.java:54)
   at scala.reflect.internal.Mirrors$RootsBase$$anonfun$getModuleOrClass$3.apply(Mirrors.java:54)
   at scala.reflect.internal.Symbols$Symbol.orElse(Symbols.java:2493)
   at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.java:53)
   at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.java:66)
   at scala.reflect.internal.Mirrors$RootsBase.getPackage(Mirrors.java:173)
   at scala.reflect.internal.Definitions$DefinitionsClass.ScalaPackage$lzycompute(Definitions.java:161)
   at scala.reflect.internal.Definitions$DefinitionsClass.ScalaPackage(Definitions.java:161)
   at scala.reflect.internal.Definitions$DefinitionsClass.ScalaPackageClass$lzycompute(Definitions.java:162)
   at scala.reflect.internal.Definitions$DefinitionsClass.ScalaPackageClass(Definitions.java:162)
   at scala.reflect.internal.Definitions$DefinitionsClass.init(Definitions.java:1390)
   at scala.tools.nsc.Global$Run.<init>(Global.java:1218)
   at scala.tools.nsc.interactive.Global$TyperRun.<init>(Global.java:1205)
   at scala.tools.nsc.interactive.Global.newTyperRun(Global.java:1228)
   at scala.tools.nsc.interactive.Global.<init>(Global.java:293)
   at org.netbeans.modules.scala.core.interactive.Global.<init>(Global.java:14)
   at org.netbeans.modules.scala.core.ScalaGlobal.<init>(ScalaGlobal.java:93)
   at org.netbeans.modules.scala.core.ScalaGlobal$.getGlobal(ScalaGlobal.java:468)
   at org.netbeans.modules.scala.core.ScalaParserResult.<init>(ScalaParserResult.java:58)
   at org.netbeans.modules.scala.core.ScalaParserResult$.apply(ScalaParserResult.java:186)
   at org.netbeans.modules.scala.core.ScalaParser.parse(ScalaParser.java:109)
   at org.netbeans.modules.parsing.impl.TaskProcessor.callParse(TaskProcessor.java:621)
   at org.netbeans.modules.parsing.impl.SourceCache.getResult(SourceCache.java:251)
   at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.run(TaskProcessor.java:798)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:304)
   at org.netbeans.modules.parsing.impl.TaskProcessor$RequestPerformer.execute(TaskProcessor.java:725)
   at org.netbeans.modules.parsing.impl.TaskProcessor$CompilationJob.run(TaskProcessor.java:686)
   at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
   at java.util.concurrent.FutureTask.run(FutureTask.java:266)
   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)