java.lang.NullPointerException during decompilation

[greenozon]

full stack trace:

java.lang.NullPointerException
	at com.strobel.decompiler.languages.java.ast.transforms.SimplifyArithmeticExpressionsTransform.visitAssignmentExpression(SimplifyArithmeticExpressionsTransform.java:178)
	at com.strobel.decompiler.languages.java.ast.transforms.SimplifyArithmeticExpressionsTransform.visitAssignmentExpression(SimplifyArithmeticExpressionsTransform.java:26)
	at com.strobel.decompiler.languages.java.ast.AssignmentExpression.acceptVisitor(AssignmentExpression.java:88)
	at com.strobel.decompiler.languages.java.ast.DepthFirstAstVisitor.visitChildren(DepthFirstAstVisitor.java:41)
	at com.strobel.decompiler.languages.java.ast.DepthFirstAstVisitor.visitBinaryOperatorExpression(DepthFirstAstVisitor.java:309)
	at com.strobel.decompiler.languages.java.ast.transforms.SimplifyArithmeticExpressionsTransform.visitBinaryOperatorExpression(SimplifyArithmeticExpressionsTransform.java:88)
	at com.strobel.decompiler.languages.java.ast.transforms.SimplifyArithmeticExpressionsTransform.visitBinaryOperatorExpression(SimplifyArithmeticExpressionsTransform.java:26)
	at com.strobel.decompiler.languages.java.ast.BinaryOperatorExpression.acceptVisitor(BinaryOperatorExpression.java:88)
	at com.strobel.decompiler.languages.java.ast.DepthFirstAstVisitor.visitChildren(DepthFirstAstVisitor.java:41)
	at com.strobel.decompiler.languages.java.ast.DepthFirstAstVisitor.visitIfElseStatement(DepthFirstAstVisitor.java:134)
	at com.strobel.decompiler.languages.java.ast.IfElseStatement.acceptVisitor(IfElseStatement.java:91)
	at com.strobel.decompiler.languages.java.ast.DepthFirstAstVisitor.visitChildren(DepthFirstAstVisitor.java:41)
	at com.strobel.decompiler.languages.java.ast.DepthFirstAstVisitor.visitBlockStatement(DepthFirstAstVisitor.java:104)
	at com.strobel.decompiler.languages.java.ast.BlockStatement.acceptVisitor(BlockStatement.java:72)
	at com.strobel.decompiler.languages.java.ast.DepthFirstAstVisitor.visitChildren(DepthFirstAstVisitor.java:41)
	at com.strobel.decompiler.languages.java.ast.DepthFirstAstVisitor.visitMethodDeclaration(DepthFirstAstVisitor.java:234)
	at com.strobel.decompiler.languages.java.ast.ContextTrackingVisitor.visitMethodDeclarationOverride(ContextTrackingVisitor.java:84)
	at com.strobel.decompiler.languages.java.ast.ContextTrackingVisitor.visitMethodDeclaration(ContextTrackingVisitor.java:76)
	at com.strobel.decompiler.languages.java.ast.ContextTrackingVisitor.visitMethodDeclaration(ContextTrackingVisitor.java:31)
	at com.strobel.decompiler.languages.java.ast.MethodDeclaration.acceptVisitor(MethodDeclaration.java:94)
	at com.strobel.decompiler.languages.java.ast.DepthFirstAstVisitor.visitChildren(DepthFirstAstVisitor.java:41)
	at com.strobel.decompiler.languages.java.ast.DepthFirstAstVisitor.visitTypeDeclaration(DepthFirstAstVisitor.java:264)
	at com.strobel.decompiler.languages.java.ast.ContextTrackingVisitor.visitTypeDeclarationOverride(ContextTrackingVisitor.java:69)
	at com.strobel.decompiler.languages.java.ast.ContextTrackingVisitor.visitTypeDeclaration(ContextTrackingVisitor.java:60)
	at com.strobel.decompiler.languages.java.ast.ContextTrackingVisitor.visitTypeDeclaration(ContextTrackingVisitor.java:31)
	at com.strobel.decompiler.languages.java.ast.TypeDeclaration.acceptVisitor(TypeDeclaration.java:98)
	at com.strobel.decompiler.languages.java.ast.DepthFirstAstVisitor.visitChildren(DepthFirstAstVisitor.java:41)
	at com.strobel.decompiler.languages.java.ast.DepthFirstAstVisitor.visitCompilationUnit(DepthFirstAstVisitor.java:274)
	at com.strobel.decompiler.languages.java.ast.CompilationUnit.acceptVisitor(CompilationUnit.java:82)
	at com.strobel.decompiler.languages.java.ast.ContextTrackingVisitor.run(ContextTrackingVisitor.java:100)
	at com.strobel.decompiler.languages.java.ast.transforms.TransformationPipeline.runTransformationsUntil(TransformationPipeline.java:101)
	at com.strobel.decompiler.languages.java.ast.AstBuilder.runTransformations(AstBuilder.java:122)
	at com.strobel.decompiler.languages.java.JavaLanguage.runTransforms(JavaLanguage.java:97)
	at com.strobel.decompiler.languages.java.JavaLanguage.buildAst(JavaLanguage.java:72)
	at com.strobel.decompiler.languages.java.JavaLanguage.decompileType(JavaLanguage.java:59)
	at us.deathmarine.luyten.FileSaver.doSaveJarDecompiled(FileSaver.java:192)
	at us.deathmarine.luyten.FileSaver.access$300(FileSaver.java:45)
	at us.deathmarine.luyten.FileSaver$4.run(FileSaver.java:112)
	at java.lang.Thread.run(Thread.java:750)

visual artifact:

777.zip