IntelliJ: error while loading package

[JPBexter]

Seems as if intelliJ is using jdk 11,eventhough in Project Structur I changed the SDK to jdk 8 already.

Console:

/Library/Java/JavaVirtualMachines/jdk-11.0.2.jdk/Contents/Home/bin/java -agentlib:jdwp=transport=dt_socket,address=localhost:64076,suspend=n,server=y -Xdebug -server -Xmx1536M -Didea.managed=true -Dfile.encoding=UTF-8 -Didea.runid=2018.2.1+4-88400d3f -jar "/Users/jennifer/Library/Application Support/IdeaIC2018.3/Scala/launcher/sbt-launch.jar" idea-shell
Listening for transport dt_socket at address: 64076
error: error while loading package, Missing dependency 'object java.lang.Object in compiler mirror', required by /Users/jennifer/.sbt/boot/scala-2.10.4/lib/scala-library.jar(scala/package.class)
error: error while loading package, Missing dependency 'object java.lang.Object in compiler mirror', required by /Users/jennifer/.sbt/boot/scala-2.10.4/lib/scala-library.jar(scala/runtime/package.class)
scala.reflect.internal.MissingRequirementError: object java.lang.Object in compiler mirror not found.
at scala.reflect.internal.MissingRequirementError$.signal(MissingRequirementError.scala:16)
at scala.reflect.internal.MissingRequirementError$.notFound(MissingRequirementError.scala:17)
at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:48)
at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:40)
at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:40)
at scala.reflect.internal.Mirrors$RootsBase.getModuleOrClass(Mirrors.scala:61)
at scala.reflect.internal.Mirrors$RootsBase.getClassByName(Mirrors.scala:99)
at scala.reflect.internal.Mirrors$RootsBase.getRequiredClass(Mirrors.scala:102)
at scala.reflect.internal.Definitions$DefinitionsClass.ObjectClass$lzycompute(Definitions.scala:264)
at scala.reflect.internal.Definitions$DefinitionsClass.ObjectClass(Definitions.scala:264)
at scala.reflect.internal.Definitions$DefinitionsClass.AnyRefClass$lzycompute(Definitions.scala:263)
at scala.reflect.internal.Definitions$DefinitionsClass.AnyRefClass(Definitions.scala:263)
at scala.reflect.internal.Definitions$DefinitionsClass.specialPolyClass(Definitions.scala:1120)
at scala.reflect.internal.Definitions$DefinitionsClass.RepeatedParamClass$lzycompute(Definitions.scala:407)
at scala.reflect.internal.Definitions$DefinitionsClass.RepeatedParamClass(Definitions.scala:407)
at scala.reflect.internal.Definitions$DefinitionsClass.syntheticCoreClasses$lzycompute(Definitions.scala:1154)
at scala.reflect.internal.Definitions$DefinitionsClass.syntheticCoreClasses(Definitions.scala:1152)
at scala.reflect.internal.Definitions$DefinitionsClass.symbolsNotPresentInBytecode$lzycompute(Definitions.scala:1196)
at scala.reflect.internal.Definitions$DefinitionsClass.symbolsNotPresentInBytecode(Definitions.scala:1196)
at scala.reflect.internal.Definitions$DefinitionsClass.init(Definitions.scala:1261)
at scala.tools.nsc.Global$Run.(Global.scala:1290)
at sbt.compiler.Eval$$anon$1.(Eval.scala:141)
at sbt.compiler.Eval.run$lzycompute$1(Eval.scala:141)
at sbt.compiler.Eval.run$1(Eval.scala:141)
at sbt.compiler.Eval.unlinkAll$1(Eval.scala:144)
at sbt.compiler.Eval.evalCommon(Eval.scala:153)
at sbt.compiler.Eval.eval(Eval.scala:96)
at sbt.EvaluateConfigurations$.evaluateDslEntry(EvaluateConfigurations.scala:177)
at sbt.EvaluateConfigurations$$anonfun$9.apply(EvaluateConfigurations.scala:117)
at sbt.EvaluateConfigurations$$anonfun$9.apply(EvaluateConfigurations.scala:115)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at scala.collection.immutable.List.foreach(List.scala:318)
at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
at scala.collection.AbstractTraversable.map(Traversable.scala:105)
at sbt.EvaluateConfigurations$.evaluateSbtFile(EvaluateConfigurations.scala:115)
at sbt.Load$.sbt$Load$$loadSettingsFile$1(Load.scala:712)
at sbt.Load$$anonfun$sbt$Load$$memoLoadSettingsFile$1$1.apply(Load.scala:717)
at sbt.Load$$anonfun$sbt$Load$$memoLoadSettingsFile$1$1.apply(Load.scala:716)
at scala.collection.MapLike$class.getOrElse(MapLike.scala:128)
at scala.collection.AbstractMap.getOrElse(Map.scala:58)
at sbt.Load$.sbt$Load$$memoLoadSettingsFile$1(Load.scala:716)
at sbt.Load$$anonfun$loadFiles$1$2.apply(Load.scala:723)
at sbt.Load$$anonfun$loadFiles$1$2.apply(Load.scala:723)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:244)
at scala.collection.mutable.ResizableArray$class.foreach(ResizableArray.scala:59)
at scala.collection.mutable.ArrayBuffer.foreach(ArrayBuffer.scala:47)
at scala.collection.TraversableLike$class.map(TraversableLike.scala:244)
at scala.collection.AbstractTraversable.map(Traversable.scala:105)
at sbt.Load$.loadFiles$1(Load.scala:723)
at sbt.Load$.discoverProjects(Load.scala:734)
at sbt.Load$.discover$1(Load.scala:545)
at sbt.Load$.loadTransitive(Load.scala:574)
at sbt.Load$.loadProjects$1(Load.scala:442)
at sbt.Load$.loadUnit(Load.scala:446)
at sbt.Load$$anonfun$18$$anonfun$apply$11.apply(Load.scala:281)
at sbt.Load$$anonfun$18$$anonfun$apply$11.apply(Load.scala:281)
at sbt.BuildLoader$$anonfun$componentLoader$1$$anonfun$apply$4$$anonfun$apply$5$$anonfun$apply$6.apply(BuildLoader.scala:91)
at sbt.BuildLoader$$anonfun$componentLoader$1$$anonfun$apply$4$$anonfun$apply$5$$anonfun$apply$6.apply(BuildLoader.scala:90)
at sbt.BuildLoader.apply(BuildLoader.scala:140)
at sbt.Load$.loadAll(Load.scala:334)
at sbt.Load$.loadURI(Load.scala:289)
at sbt.Load$.load(Load.scala:285)
at sbt.Load$.load(Load.scala:276)
at sbt.Load$.apply(Load.scala:130)
at sbt.GlobalPlugin$.build(GlobalPlugin.scala:33)
at sbt.GlobalPlugin$.load(GlobalPlugin.scala:39)
at sbt.Load$.loadGlobal(Load.scala:88)
at sbt.Load$.defaultWithGlobal(Load.scala:63)
at sbt.Load$.defaultLoad(Load.scala:34)
at sbt.BuiltinCommands$.doLoadProject(Main.scala:481)
at sbt.BuiltinCommands$$anonfun$loadProjectImpl$2.apply(Main.scala:475)
at sbt.BuiltinCommands$$anonfun$loadProjectImpl$2.apply(Main.scala:475)
at sbt.Command$$anonfun$applyEffect$1$$anonfun$apply$2.apply(Command.scala:58)
at sbt.Command$$anonfun$applyEffect$1$$anonfun$apply$2.apply(Command.scala:58)
at sbt.Command$$anonfun$applyEffect$2$$anonfun$apply$3.apply(Command.scala:60)
at sbt.Command$$anonfun$applyEffect$2$$anonfun$apply$3.apply(Command.scala:60)
at sbt.Command$.process(Command.scala:92)
at sbt.MainLoop$$anonfun$1$$anonfun$apply$1.apply(MainLoop.scala:98)
at sbt.MainLoop$$anonfun$1$$anonfun$apply$1.apply(MainLoop.scala:98)
at sbt.State$$anon$1.process(State.scala:184)
at sbt.MainLoop$$anonfun$1.apply(MainLoop.scala:98)
at sbt.MainLoop$$anonfun$1.apply(MainLoop.scala:98)
at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:17)
at sbt.MainLoop$.next(MainLoop.scala:98)
at sbt.MainLoop$.run(MainLoop.scala:91)
at sbt.MainLoop$$anonfun$runWithNewLog$1.apply(MainLoop.scala:70)
at sbt.MainLoop$$anonfun$runWithNewLog$1.apply(MainLoop.scala:65)
at sbt.Using.apply(Using.scala:24)
at sbt.MainLoop$.runWithNewLog(MainLoop.scala:65)
at sbt.MainLoop$.runAndClearLast(MainLoop.scala:48)
at sbt.MainLoop$.runLoggedLoop(MainLoop.scala:32)
at sbt.MainLoop$.runLogged(MainLoop.scala:24)
at sbt.StandardMain$.runManaged(Main.scala:53)
at sbt.xMain.run(Main.scala:28)
at xsbt.boot.Launch$$anonfun$run$1.apply(Launch.scala:109)
at xsbt.boot.Launch$.withContextLoader(Launch.scala:128)
at xsbt.boot.Launch$.run(Launch.scala:109)
at xsbt.boot.Launch$$anonfun$apply$1.apply(Launch.scala:35)
at xsbt.boot.Launch$.launch(Launch.scala:117)
at xsbt.boot.Launch$.apply(Launch.scala:18)
at xsbt.boot.Boot$.runImpl(Boot.scala:56)
at xsbt.boot.Boot$.main(Boot.scala:18)
at xsbt.boot.Boot.main(Boot.scala)
[error] scala.reflect.internal.MissingRequirementError: object java.lang.Object in compiler mirror not found.
[error] Use 'last' for the full log.
Project loading failed: (r)etry, (q)uit, (l)ast, or (i)gnore?