org.jetbrains.kotlin.backend.common.BackendException: Backend Internal error: Exception during IR lowering File being compiled: /home/rene/AndroidStudioProjects/pass13/app/src/main/java/com/aresid/simplepasswordgeneratorapp/ui/widgets/Checkbox.kt The root cause java.lang.NullPointerException was thrown at: org.jetbrains.kotlin.backend.jvm.lower.inlineclasses.InlineClassAbi.getUnderlyingType(InlineClassAbi.kt:61) at org.jetbrains.kotlin.backend.common.CodegenUtil.reportBackendException(CodegenUtil.kt:239) at org.jetbrains.kotlin.backend.common.CodegenUtil.reportBackendException$default(CodegenUtil.kt:235) at org.jetbrains.kotlin.backend.common.phaser.PerformByIrFilePhase.invoke(PhaseBuilders.kt:124) at org.jetbrains.kotlin.backend.common.phaser.PerformByIrFilePhase.invoke(PhaseBuilders.kt:112) at org.jetbrains.kotlin.backend.common.phaser.NamedCompilerPhase.invoke(CompilerPhase.kt:94) at org.jetbrains.kotlin.backend.common.phaser.CompositePhase.invoke(PhaseBuilders.kt:30) at org.jetbrains.kotlin.backend.common.phaser.NamedCompilerPhase.invoke(CompilerPhase.kt:94) at org.jetbrains.kotlin.backend.common.phaser.CompilerPhaseKt.invokeToplevel(CompilerPhase.kt:41) at org.jetbrains.kotlin.backend.jvm.JvmLower.lower(JvmLower.kt:407) at org.jetbrains.kotlin.backend.jvm.JvmIrCodegenFactory.doGenerateFilesInternal$backend_jvm(JvmIrCodegenFactory.kt:147) at org.jetbrains.kotlin.backend.jvm.JvmIrCodegenFactory.generateModule(JvmIrCodegenFactory.kt:120) at org.jetbrains.kotlin.codegen.KotlinCodegenFacade.compileCorrectFiles(KotlinCodegenFacade.java:35) at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.generate(KotlinToJVMBytecodeCompiler.kt:595) at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.compileModules$cli(KotlinToJVMBytecodeCompiler.kt:211) at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.compileModules$cli$default(KotlinToJVMBytecodeCompiler.kt:154) at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:169) at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:52) at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:88) at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:44) at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:98) at org.jetbrains.kotlin.incremental.IncrementalJvmCompilerRunner.runCompiler(IncrementalJvmCompilerRunner.kt:386) at org.jetbrains.kotlin.incremental.IncrementalJvmCompilerRunner.runCompiler(IncrementalJvmCompilerRunner.kt:110) at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.compileIncrementally(IncrementalCompilerRunner.kt:286) at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.compileImpl$rebuild(IncrementalCompilerRunner.kt:99) at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.compileImpl(IncrementalCompilerRunner.kt:114) at org.jetbrains.kotlin.incremental.IncrementalCompilerRunner.compile(IncrementalCompilerRunner.kt:74) at org.jetbrains.kotlin.daemon.CompileServiceImplBase.execIncrementalCompiler(CompileServiceImpl.kt:607) at org.jetbrains.kotlin.daemon.CompileServiceImplBase.access$execIncrementalCompiler(CompileServiceImpl.kt:96) at org.jetbrains.kotlin.daemon.CompileServiceImpl.compile(CompileServiceImpl.kt:1659) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:359) at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200) at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197) at java.base/java.security.AccessController.doPrivileged(Native Method) at java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196) at java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:562) at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:796) at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:677) at java.base/java.security.AccessController.doPrivileged(Native Method) at java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:676) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:834) Caused by: java.lang.NullPointerException at org.jetbrains.kotlin.backend.jvm.lower.inlineclasses.InlineClassAbi.getUnderlyingType(InlineClassAbi.kt:61) at org.jetbrains.kotlin.backend.jvm.lower.inlineclasses.InlineClassAbi.unboxType$backend_jvm(InlineClassAbi.kt:44) at org.jetbrains.kotlin.backend.jvm.JvmBackendContext$JvmIr.unfoldInlineClassType(JvmBackendContext.kt:162) at org.jetbrains.kotlin.backend.common.lower.DefaultArgumentStubGeneratorKt.generateDefaultsFunctionImpl(DefaultArgumentStubGenerator.kt:578) at org.jetbrains.kotlin.backend.common.lower.DefaultArgumentStubGeneratorKt.generateDefaultsFunction(DefaultArgumentStubGenerator.kt:528) at org.jetbrains.kotlin.backend.common.lower.DefaultArgumentStubGeneratorKt.access$generateDefaultsFunction(DefaultArgumentStubGenerator.kt:1) at org.jetbrains.kotlin.backend.common.lower.DefaultParameterInjector.parametersForCall(DefaultArgumentStubGenerator.kt:381) at org.jetbrains.kotlin.backend.common.lower.DefaultParameterInjector.visitFunctionAccessExpression(DefaultArgumentStubGenerator.kt:299) at org.jetbrains.kotlin.backend.common.lower.DefaultParameterInjector.visitCall(DefaultArgumentStubGenerator.kt:358) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitCall(IrElementTransformerVoid.kt:199) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitCall(IrElementTransformerVoid.kt:24) at org.jetbrains.kotlin.ir.expressions.impl.IrCallImpl.accept(IrCallImpl.kt:47) at org.jetbrains.kotlin.ir.expressions.IrExpression.transform(IrExpression.kt:33) at org.jetbrains.kotlin.ir.expressions.IrExpression.transform(IrExpression.kt:26) at org.jetbrains.kotlin.ir.util.TransformKt.transformInPlace(transform.kt:35) at org.jetbrains.kotlin.ir.expressions.IrContainerExpression.transformChildren(IrBlock.kt:41) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitExpression(IrElementTransformerVoid.kt:131) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitContainerExpression(IrElementTransformerVoid.kt:150) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitBlock(IrElementTransformerVoid.kt:153) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitBlock(IrElementTransformerVoid.kt:154) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitBlock(IrElementTransformerVoid.kt:24) at org.jetbrains.kotlin.ir.expressions.impl.IrBlockImpl.accept(IrBlockImpl.kt:48) at org.jetbrains.kotlin.ir.expressions.IrExpression.transform(IrExpression.kt:33) at org.jetbrains.kotlin.ir.expressions.IrMemberAccessExpression.transformChildren(IrMemberAccessExpression.kt:60) at org.jetbrains.kotlin.ir.expressions.IrFunctionAccessExpression.transformChildren(IrFunctionAccessExpression.kt:46) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoidKt.transformChildrenVoid(IrElementTransformerVoid.kt:330) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.transformChildrenVoid(IrElementTransformerVoid.kt:325) at org.jetbrains.kotlin.backend.common.lower.DefaultParameterInjector.visitCall(DefaultArgumentStubGenerator.kt:357) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitCall(IrElementTransformerVoid.kt:199) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitCall(IrElementTransformerVoid.kt:24) at org.jetbrains.kotlin.ir.expressions.impl.IrCallImpl.accept(IrCallImpl.kt:47) at org.jetbrains.kotlin.ir.expressions.IrExpression.transform(IrExpression.kt:33) at org.jetbrains.kotlin.ir.expressions.IrFunctionAccessExpression.transformChildren(IrFunctionAccessExpression.kt:48) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoidKt.transformChildrenVoid(IrElementTransformerVoid.kt:330) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.transformChildrenVoid(IrElementTransformerVoid.kt:325) at org.jetbrains.kotlin.backend.common.lower.DefaultParameterInjector.visitCall(DefaultArgumentStubGenerator.kt:357) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitCall(IrElementTransformerVoid.kt:199) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitCall(IrElementTransformerVoid.kt:24) at org.jetbrains.kotlin.ir.expressions.impl.IrCallImpl.accept(IrCallImpl.kt:47) at org.jetbrains.kotlin.ir.expressions.IrExpression.transform(IrExpression.kt:33) at org.jetbrains.kotlin.ir.expressions.IrExpression.transform(IrExpression.kt:26) at org.jetbrains.kotlin.ir.util.TransformKt.transformInPlace(transform.kt:35) at org.jetbrains.kotlin.ir.expressions.IrContainerExpression.transformChildren(IrBlock.kt:41) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitExpression(IrElementTransformerVoid.kt:131) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitContainerExpression(IrElementTransformerVoid.kt:150) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitBlock(IrElementTransformerVoid.kt:153) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitBlock(IrElementTransformerVoid.kt:154) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitBlock(IrElementTransformerVoid.kt:24) at org.jetbrains.kotlin.ir.expressions.impl.IrBlockImpl.accept(IrBlockImpl.kt:48) at org.jetbrains.kotlin.ir.expressions.IrExpression.transform(IrExpression.kt:33) at org.jetbrains.kotlin.ir.expressions.IrBranch.transformChildren(IrWhen.kt:55) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitBranch(IrElementTransformerVoid.kt:251) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitBranch(IrElementTransformerVoid.kt:255) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitBranch(IrElementTransformerVoid.kt:24) at org.jetbrains.kotlin.ir.expressions.impl.IrBranchImpl.transform(IrWhenImpl.kt:56) at org.jetbrains.kotlin.ir.expressions.IrWhen.transformChildren(IrWhen.kt:37) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitExpression(IrElementTransformerVoid.kt:131) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitWhen(IrElementTransformerVoid.kt:247) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitWhen(IrElementTransformerVoid.kt:248) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid.visitWhen(IrElementTransformerVoid.kt:24) at org.jetbrains.kotlin.ir.expressions.IrWhen.accept(IrWhen.kt:29) at org.jetbrains.kotlin.ir.expressions.IrExpression.transform(IrExpression.kt:33) at org.jetbrains.kotlin.ir.expressions.IrExpression.transform(IrExpression.kt:26) at org.jetbrains.kotlin.ir.expressions.IrBlockBody.transformChildren(IrBody.kt:62) at org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoidKt.transformChildrenVoid(IrElementTransformerVoid.kt:330) at org.jetbrains.kotlin.backend.common.lower.DefaultParameterInjector.lower(DefaultArgumentStubGenerator.kt:291) at org.jetbrains.kotlin.backend.common.BodyLoweringVisitor$visitBody$1.invoke(Lower.kt:155) at org.jetbrains.kotlin.backend.common.BodyLoweringVisitor$visitBody$1.invoke(Lower.kt:154) at org.jetbrains.kotlin.ir.declarations.StageController.bodyLowering(PersistentApi.kt:29) at org.jetbrains.kotlin.backend.common.BodyLoweringVisitor.visitBody(Lower.kt:154) at org.jetbrains.kotlin.backend.common.BodyLoweringVisitor.visitBody(Lower.kt:130) at org.jetbrains.kotlin.ir.visitors.IrElementVisitor$DefaultImpls.visitBlockBody(IrElementVisitor.kt:48) at org.jetbrains.kotlin.backend.common.BodyLoweringVisitor.visitBlockBody(Lower.kt:130) at org.jetbrains.kotlin.backend.common.BodyLoweringVisitor.visitBlockBody(Lower.kt:130) at org.jetbrains.kotlin.ir.expressions.IrBlockBody.accept(IrBody.kt:54) at org.jetbrains.kotlin.ir.declarations.IrFunction.acceptChildren(IrFunction.kt:61) at org.jetbrains.kotlin.backend.common.BodyLoweringVisitor.visitDeclaration(Lower.kt:140) at org.jetbrains.kotlin.backend.common.BodyLoweringVisitor.visitDeclaration(Lower.kt:130) at org.jetbrains.kotlin.ir.visitors.IrElementVisitor$DefaultImpls.visitFunction(IrElementVisitor.kt:33) at org.jetbrains.kotlin.backend.common.BodyLoweringVisitor.visitFunction(Lower.kt:130) at org.jetbrains.kotlin.backend.common.BodyLoweringVisitor.visitFunction(Lower.kt:130) at org.jetbrains.kotlin.ir.visitors.IrElementVisitor$DefaultImpls.visitSimpleFunction(IrElementVisitor.kt:34) at org.jetbrains.kotlin.backend.common.BodyLoweringVisitor.visitSimpleFunction(Lower.kt:130) at org.jetbrains.kotlin.backend.common.BodyLoweringVisitor.visitSimpleFunction(Lower.kt:130) at org.jetbrains.kotlin.ir.declarations.IrSimpleFunction.accept(IrSimpleFunction.kt:28) at org.jetbrains.kotlin.backend.common.BodyLoweringVisitor.visitClass(Lower.kt:146) at org.jetbrains.kotlin.backend.common.BodyLoweringVisitor.visitClass(Lower.kt:130) at org.jetbrains.kotlin.ir.declarations.IrClass.accept(IrClass.kt:55) at org.jetbrains.kotlin.backend.common.LowerKt.runOnFilePostfix(Lower.kt:126) at org.jetbrains.kotlin.backend.common.LowerKt.runOnFilePostfix$default(Lower.kt:119) at org.jetbrains.kotlin.backend.common.BodyLoweringPass$DefaultImpls.lower(Lower.kt:62) at org.jetbrains.kotlin.backend.common.lower.DefaultParameterInjector.lower(DefaultArgumentStubGenerator.kt:283) at org.jetbrains.kotlin.backend.common.phaser.FileLoweringPhaseAdapter.invoke(PhaseBuilders.kt:155) at org.jetbrains.kotlin.backend.common.phaser.FileLoweringPhaseAdapter.invoke(PhaseBuilders.kt:151) at org.jetbrains.kotlin.backend.common.phaser.NamedCompilerPhase.invoke(CompilerPhase.kt:94) at org.jetbrains.kotlin.backend.common.phaser.PerformByIrFilePhase.invoke(PhaseBuilders.kt:121) ... 43 more