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java.lang.NullPointerException: 	at scala.tools.nsc.symtab.classfile.Pickler$Pickle.scala$tools$nsc$symtab$classfile$Pickler$Pickle$$putType(Pickler.scala:257)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.put(Pickler.scala:272)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle.scala$tools$nsc$symtab$classfile$Pickler$Pickle$$putTree(Pickler.scala:281)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.traverse(Pickler.scala:268)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.traverse(Pickler.scala:262)	at scala.reflect.api.Trees$Traverser.traverseTrees(Trees.scala:2484)	at scala.reflect.internal.Trees$class.traverseComponents$1(Trees.scala:1234)	at scala.reflect.internal.Trees$class.itraverse(Trees.scala:1330)	at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)	at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)	at scala.reflect.api.Trees$Traverser.traverse(Trees.scala:2475)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.put(Pickler.scala:276)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle.scala$tools$nsc$symtab$classfile$Pickler$Pickle$$putTree(Pickler.scala:281)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.traverse(Pickler.scala:268)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.traverse(Pickler.scala:262)	at scala.reflect.internal.Trees$class.traverseComponents$1(Trees.scala:1294)	at scala.reflect.internal.Trees$class.itraverse(Trees.scala:1330)	at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)	at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)	at scala.reflect.api.Trees$Traverser.traverse(Trees.scala:2475)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.put(Pickler.scala:276)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle.scala$tools$nsc$symtab$classfile$Pickler$Pickle$$putTree(Pickler.scala:281)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.traverse(Pickler.scala:268)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.traverse(Pickler.scala:262)	at scala.reflect.api.Trees$Traverser.traverseTrees(Trees.scala:2484)	at scala.reflect.internal.Trees$class.traverseComponents$1(Trees.scala:1284)	at scala.reflect.internal.Trees$class.itraverse(Trees.scala:1330)	at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)	at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)	at scala.reflect.api.Trees$Traverser.traverse(Trees.scala:2475)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.put(Pickler.scala:276)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle.scala$tools$nsc$symtab$classfile$Pickler$Pickle$$putTree(Pickler.scala:281)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.traverse(Pickler.scala:268)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.traverse(Pickler.scala:262)	at scala.reflect.api.Trees$Traverser.traverseTrees(Trees.scala:2484)	at scala.reflect.internal.Trees$class.traverseComponents$1(Trees.scala:1284)	at scala.reflect.internal.Trees$class.itraverse(Trees.scala:1330)	at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)	at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)	at scala.reflect.api.Trees$Traverser.traverse(Trees.scala:2475)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.put(Pickler.scala:276)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle.scala$tools$nsc$symtab$classfile$Pickler$Pickle$$putTree(Pickler.scala:281)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.traverse(Pickler.scala:268)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.traverse(Pickler.scala:262)	at scala.reflect.api.Trees$Traverser.traverseTrees(Trees.scala:2484)	at scala.reflect.internal.Trees$class.traverseComponents$1(Trees.scala:1284)	at scala.reflect.internal.Trees$class.itraverse(Trees.scala:1330)	at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)	at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)	at scala.reflect.api.Trees$Traverser.traverse(Trees.scala:2475)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.put(Pickler.scala:276)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle.scala$tools$nsc$symtab$classfile$Pickler$Pickle$$putTree(Pickler.scala:281)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.traverse(Pickler.scala:268)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.traverse(Pickler.scala:262)	at scala.reflect.api.Trees$Traverser.traverseTrees(Trees.scala:2484)	at scala.reflect.internal.Trees$class.traverseComponents$1(Trees.scala:1284)	at scala.reflect.internal.Trees$class.itraverse(Trees.scala:1330)	at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)	at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)	at scala.reflect.api.Trees$Traverser.traverse(Trees.scala:2475)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.put(Pickler.scala:276)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle.scala$tools$nsc$symtab$classfile$Pickler$Pickle$$putTree(Pickler.scala:281)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.traverse(Pickler.scala:268)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.traverse(Pickler.scala:262)	at scala.reflect.api.Trees$Traverser.traverseTrees(Trees.scala:2484)	at scala.reflect.internal.Trees$class.traverseComponents$1(Trees.scala:1284)	at scala.reflect.internal.Trees$class.itraverse(Trees.scala:1330)	at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)	at scala.reflect.internal.SymbolTable.itraverse(SymbolTable.scala:16)	at scala.reflect.api.Trees$Traverser.traverse(Trees.scala:2475)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle$putTreeTraverser$.put(Pickler.scala:276)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle.scala$tools$nsc$symtab$classfile$Pickler$Pickle$$putTree(Pickler.scala:281)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle.scala$tools$nsc$symtab$classfile$Pickler$Pickle$$putAnnotArg$1(Pickler.scala:317)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle.putAnnotationBody(Pickler.scala:329)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle.scala$tools$nsc$symtab$classfile$Pickler$Pickle$$putAnnotation(Pickler.scala:304)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle.putSymbol(Pickler.scala:202)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle.putSymbols(Pickler.scala:213)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle.scala$tools$nsc$symtab$classfile$Pickler$Pickle$$putType(Pickler.scala:241)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle.putSymbol(Pickler.scala:181)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle.putSymbols(Pickler.scala:213)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle.scala$tools$nsc$symtab$classfile$Pickler$Pickle$$putType(Pickler.scala:241)	at scala.tools.nsc.symtab.classfile.Pickler$Pickle.putSymbol(Pickler.scala:181)	at scala.tools.nsc.symtab.classfile.Pickler$PicklePhase.add$1(Pickler.scala:40)	at scala.tools.nsc.symtab.classfile.Pickler$PicklePhase.scala$tools$nsc$symtab$classfile$Pickler$PicklePhase$$pickle$1(Pickler.scala:51)	at scala.tools.nsc.symtab.classfile.Pickler$PicklePhase.scala$tools$nsc$symtab$classfile$Pickler$PicklePhase$$pickle$1(Pickler.scala:47)	at scala.tools.nsc.symtab.classfile.Pickler$PicklePhase.apply(Pickler.scala:60)	at scala.tools.nsc.Global$GlobalPhase$$anonfun$applyPhase$1.apply$mcV$sp(Global.scala:440)	at scala.tools.nsc.Global$GlobalPhase.withCurrentUnit(Global.scala:431)	at scala.tools.nsc.Global$GlobalPhase.applyPhase(Global.scala:440)	at scala.tools.nsc.Global$GlobalPhase$$anonfun$run$1.apply(Global.scala:398)	at scala.tools.nsc.Global$GlobalPhase$$anonfun$run$1.apply(Global.scala:398)	at scala.collection.Iterator$class.foreach(Iterator.scala:893)	at scala.collection.AbstractIterator.foreach(Iterator.scala:1336)	at scala.tools.nsc.Global$GlobalPhase.run(Global.scala:398)	at scala.tools.nsc.Global$Run.compileUnitsInternal(Global.scala:1501)	at scala.tools.nsc.Global$Run.compileUnits(Global.scala:1486)	at scala.tools.nsc.Global$Run.compileSources(Global.scala:1481)	at scala.tools.nsc.Global$Run.compile(Global.scala:1582)	at xsbt.CachedCompiler0.run(CompilerInterface.scala:116)	at xsbt.CachedCompiler0.run(CompilerInterface.scala:95)	at xsbt.CompilerInterface.run(CompilerInterface.scala:26)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at sbt.compiler.AnalyzingCompiler.call(AnalyzingCompiler.scala:101)	at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:47)	at sbt.compiler.AnalyzingCompiler.compile(AnalyzingCompiler.scala:41)	at sbt.compiler.MixedAnalyzingCompiler$$anonfun$compileScala$1$1.apply$mcV$sp(MixedAnalyzingCompiler.scala:50)	at sbt.compiler.MixedAnalyzingCompiler$$anonfun$compileScala$1$1.apply(MixedAnalyzingCompiler.scala:50)	at sbt.compiler.MixedAnalyzingCompiler$$anonfun$compileScala$1$1.apply(MixedAnalyzingCompiler.scala:50)	at sbt.compiler.MixedAnalyzingCompiler.timed(MixedAnalyzingCompiler.scala:74)	at sbt.compiler.MixedAnalyzingCompiler.compileScala$1(MixedAnalyzingCompiler.scala:49)	at sbt.compiler.MixedAnalyzingCompiler.compile(MixedAnalyzingCompiler.scala:64)	at sbt.compiler.IC$$anonfun$compileInternal$1.apply(IncrementalCompiler.scala:160)	at sbt.compiler.IC$$anonfun$compileInternal$1.apply(IncrementalCompiler.scala:160)	at sbt.inc.IncrementalCompile$$anonfun$doCompile$1.apply(Compile.scala:66)	at sbt.inc.IncrementalCompile$$anonfun$doCompile$1.apply(Compile.scala:64)	at sbt.inc.IncrementalCommon.cycle(IncrementalCommon.scala:32)	at sbt.inc.Incremental$$anonfun$1.apply(Incremental.scala:68)	at sbt.inc.Incremental$$anonfun$1.apply(Incremental.scala:67)	at sbt.inc.Incremental$.manageClassfiles(Incremental.scala:95)	at sbt.inc.Incremental$.compile(Incremental.scala:67)	at sbt.inc.IncrementalCompile$.apply(Compile.scala:54)	at sbt.compiler.IC$.compileInternal(IncrementalCompiler.scala:160)	at sbt.compiler.IC$.incrementalCompile(IncrementalCompiler.scala:138)	at sbt.Compiler$.compile(Compiler.scala:152)	at sbt.Compiler$.compile(Compiler.scala:138)	at sbt.Defaults$.sbt$Defaults$$compileIncrementalTaskImpl(Defaults.scala:860)	at sbt.Defaults$$anonfun$compileIncrementalTask$1.apply(Defaults.scala:851)	at sbt.Defaults$$anonfun$compileIncrementalTask$1.apply(Defaults.scala:849)	at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47)	at sbt.$tilde$greater$$anonfun$$u2219$1.apply(TypeFunctions.scala:40)	at sbt.std.Transform$$anon$4.work(System.scala:63)	at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:228)	at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:228)	at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:17)	at sbt.Execute.work(Execute.scala:237)	at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:228)	at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:228)	at sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:159)	at sbt.CompletionService$$anon$2.call(CompletionService.scala:28)	at java.util.concurrent.FutureTask.run(FutureTask.java:266)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)	at java.util.concurrent.FutureTask.run(FutureTask.java:266)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at java.lang.Thread.run(Thread.java:745)