Upgrade tool fails with NPE

[Elanlum]

Hello! I encountered several problems trying both upgrade and migrate tools.

Check this out for the start.

Intro: Spring Boot 2.7.5; Java 17; Maven 3.8.6; MacOS 12.5
Downloaded: spring-boot-upgrade.jar version 0.13

Executing:

java -jar --add-opens java.base/sun.nio.ch=ALL-UNNAMED --add-opens java.base/java.io=ALL-UNNAMED spring-boot-upgrade.jar my-project

Here's the full stack trace I get

Scanning my-project
12:37:27.834 [main] ERROR o.s.s.o.RewriteExecutionContext - Exception occured!
java.lang.ClassCastException: class org.openrewrite.java.tree.J$Case cannot be cast to class org.openrewrite.java.tree.Expression (org.openrewrite.java.tree.J$Case and org.openrewrite.java.tree.Expression are in unnamed module of loader org.springframework.boot.loader.LaunchedURLClassLoader @6f75e721)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.visitReturn(ReloadableJava17ParserVisitor.java:1139)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.visitReturn(ReloadableJava17ParserVisitor.java:71)
	at com.sun.tools.javac.tree.JCTree$JCReturn.accept(JCTree.java:1717)
	at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:86)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.convert(ReloadableJava17ParserVisitor.java:1482)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.convert(ReloadableJava17ParserVisitor.java:1511)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.convertStatements(ReloadableJava17ParserVisitor.java:1620)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.convertStatements(ReloadableJava17ParserVisitor.java:1602)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.visitBlock(ReloadableJava17ParserVisitor.java:331)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.visitBlock(ReloadableJava17ParserVisitor.java:71)
	at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:1103)
	at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:86)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.convert(ReloadableJava17ParserVisitor.java:1482)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.convertOrNull(ReloadableJava17ParserVisitor.java:1524)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.visitMethod(ReloadableJava17ParserVisitor.java:963)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.visitMethod(ReloadableJava17ParserVisitor.java:71)
	at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:953)
	at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:86)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.convert(ReloadableJava17ParserVisitor.java:1482)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.convert(ReloadableJava17ParserVisitor.java:1511)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.convertStatements(ReloadableJava17ParserVisitor.java:1620)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.convertStatements(ReloadableJava17ParserVisitor.java:1602)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.visitClass(ReloadableJava17ParserVisitor.java:472)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.visitClass(ReloadableJava17ParserVisitor.java:71)
	at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:860)
	at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:86)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.convert(ReloadableJava17ParserVisitor.java:1482)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.convertAll(ReloadableJava17ParserVisitor.java:1535)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.visitCompilationUnit(ReloadableJava17ParserVisitor.java:518)
	at org.openrewrite.java.isolated.ReloadableJava17ParserVisitor.visitCompilationUnit(ReloadableJava17ParserVisitor.java:71)
	at com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:614)
	at com.sun.source.util.TreePathScanner.scan(TreePathScanner.java:86)
	at org.openrewrite.java.isolated.ReloadableJava17Parser.lambda$parseInputs$0(ReloadableJava17Parser.java:178)
	at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
	at java.base/java.util.Iterator.forEachRemaining(Iterator.java:133)
	at java.base/java.util.Spliterators$IteratorSpliterator.forEachRemaining(Spliterators.java:1845)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682)
	at org.openrewrite.java.isolated.ReloadableJava17Parser.parseInputs(ReloadableJava17Parser.java:200)
	at org.openrewrite.java.Java17Parser.parseInputs(Java17Parser.java:43)
	at org.springframework.sbm.java.impl.RewriteJavaParser.parseInputs(RewriteJavaParser.java:61)
	at org.springframework.sbm.project.parser.MavenProjectParser.parseTestJavaSources(MavenProjectParser.java:193)
	at org.springframework.sbm.project.parser.MavenProjectParser.parse(MavenProjectParser.java:149)
	at org.springframework.sbm.project.parser.ProjectContextInitializer.initProjectContext(ProjectContextInitializer.java:53)
	at org.springframework.sbm.engine.commands.ScanCommand.execute(ScanCommand.java:57)
	at org.springframework.sbm.SpringBootMigratorRunner.run(SpringBootMigratorRunner.java:44)
	at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:762)
	at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:752)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295)
	at org.springframework.sbm.SpringBootUpgradeReportApp.main(SpringBootUpgradeReportApp.java:31)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49)
	at org.springframework.boot.loader.Launcher.launch(Launcher.java:108)
	at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
	at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:65)
12:37:31.227 [main] ERROR o.s.boot.SpringApplication - Application run failed
java.lang.IllegalStateException: Failed to execute ApplicationRunner
	at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:765)
	at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:752)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295)
	at org.springframework.sbm.SpringBootUpgradeReportApp.main(SpringBootUpgradeReportApp.java:31)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49)
	at org.springframework.boot.loader.Launcher.launch(Launcher.java:108)
	at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
	at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:65)
Caused by: org.springframework.sbm.engine.recipe.ActionFailedException: Action [SpringBootUpgradeReportAction] 'Creates a Upgrade report for Spring Boot 3.' failed: Cannot invoke "org.openrewrite.java.tree.JavaType$FullyQualified.getFullyQualifiedName()" because the return value of "org.openrewrite.java.tree.TypeUtils.asFullyQualified(org.openrewrite.java.tree.JavaType)" is null
	at org.springframework.sbm.engine.recipe.Action.applyWithStatusEvent(Action.java:43)
	at org.springframework.sbm.engine.recipe.Recipe.apply(Recipe.java:101)
	at org.springframework.sbm.engine.commands.ApplyCommand.execute(ApplyCommand.java:61)
	at org.springframework.sbm.SpringBootMigratorRunner.run(SpringBootMigratorRunner.java:46)
	at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:762)
	... 13 common frames omitted
Caused by: java.lang.NullPointerException: Cannot invoke "org.openrewrite.java.tree.JavaType$FullyQualified.getFullyQualifiedName()" because the return value of "org.openrewrite.java.tree.TypeUtils.asFullyQualified(org.openrewrite.java.tree.JavaType)" is null
	at org.springframework.sbm.java.impl.OpenRewriteMethod.getReturnValue(OpenRewriteMethod.java:167)
	at org.springframework.sbm.boot.common.finder.SpringBeanMethodDeclarationFinder.lambda$apply$1(SpringBeanMethodDeclarationFinder.java:52)
	at java.base/java.util.stream.MatchOps$1MatchSink.accept(MatchOps.java:90)
	at java.base/java.util.ArrayList$ArrayListSpliterator.tryAdvance(ArrayList.java:1602)
	at java.base/java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:129)
	at java.base/java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:527)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:513)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:230)
	at java.base/java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:196)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.anyMatch(ReferencePipeline.java:632)
	at org.springframework.sbm.boot.common.finder.SpringBeanMethodDeclarationFinder.lambda$apply$2(SpringBeanMethodDeclarationFinder.java:52)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:178)
	at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596)
	at org.springframework.sbm.boot.common.finder.SpringBeanMethodDeclarationFinder.lambda$apply$6(SpringBeanMethodDeclarationFinder.java:56)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179)
	at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596)
	at org.springframework.sbm.boot.common.finder.SpringBeanMethodDeclarationFinder.apply(SpringBeanMethodDeclarationFinder.java:45)
	at org.springframework.sbm.boot.common.finder.SpringBeanMethodDeclarationFinder.apply(SpringBeanMethodDeclarationFinder.java:30)
	at org.springframework.sbm.engine.context.ProjectContext.search(ProjectContext.java:77)
	at org.springframework.sbm.boot.upgrade_27_30.report.helper.CommonsMultipartResolverHelper.evaluate(CommonsMultipartResolverHelper.java:51)
	at org.springframework.sbm.boot.upgrade_27_30.report.SpringBootUpgradeReportSection.shouldRender(SpringBootUpgradeReportSection.java:77)
	at org.springframework.sbm.boot.upgrade_27_30.report.SpringBootUpgradeReportAction.lambda$apply$0(SpringBootUpgradeReportAction.java:124)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:178)
	at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596)
	at org.springframework.sbm.boot.upgrade_27_30.report.SpringBootUpgradeReportAction.apply(SpringBootUpgradeReportAction.java:125)
	at org.springframework.sbm.boot.upgrade_27_30.report.SpringBootUpgradeReportAction.applyInternal(SpringBootUpgradeReportAction.java:214)
	at org.springframework.sbm.engine.recipe.Action.applyWithStatusEvent(Action.java:37)
	... 17 common frames omitted
Failed to execute ApplicationRunner
java.lang.IllegalStateException: Failed to execute ApplicationRunner
	at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:765)
	at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:752)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295)
	at org.springframework.sbm.SpringBootUpgradeReportApp.main(SpringBootUpgradeReportApp.java:31)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49)
	at org.springframework.boot.loader.Launcher.launch(Launcher.java:108)
	at org.springframework.boot.loader.Launcher.launch(Launcher.java:58)
	at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:65)
Caused by: org.springframework.sbm.engine.recipe.ActionFailedException: Action [SpringBootUpgradeReportAction] 'Creates a Upgrade report for Spring Boot 3.' failed: Cannot invoke "org.openrewrite.java.tree.JavaType$FullyQualified.getFullyQualifiedName()" because the return value of "org.openrewrite.java.tree.TypeUtils.asFullyQualified(org.openrewrite.java.tree.JavaType)" is null
	at org.springframework.sbm.engine.recipe.Action.applyWithStatusEvent(Action.java:43)
	at org.springframework.sbm.engine.recipe.Recipe.apply(Recipe.java:101)
	at org.springframework.sbm.engine.commands.ApplyCommand.execute(ApplyCommand.java:61)
	at org.springframework.sbm.SpringBootMigratorRunner.run(SpringBootMigratorRunner.java:46)
	at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:762)
	... 13 more
Caused by: java.lang.NullPointerException: Cannot invoke "org.openrewrite.java.tree.JavaType$FullyQualified.getFullyQualifiedName()" because the return value of "org.openrewrite.java.tree.TypeUtils.asFullyQualified(org.openrewrite.java.tree.JavaType)" is null
	at org.springframework.sbm.java.impl.OpenRewriteMethod.getReturnValue(OpenRewriteMethod.java:167)
	at org.springframework.sbm.boot.common.finder.SpringBeanMethodDeclarationFinder.lambda$apply$1(SpringBeanMethodDeclarationFinder.java:52)
	at java.base/java.util.stream.MatchOps$1MatchSink.accept(MatchOps.java:90)
	at java.base/java.util.ArrayList$ArrayListSpliterator.tryAdvance(ArrayList.java:1602)
	at java.base/java.util.stream.ReferencePipeline.forEachWithCancel(ReferencePipeline.java:129)
	at java.base/java.util.stream.AbstractPipeline.copyIntoWithCancel(AbstractPipeline.java:527)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:513)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:230)
	at java.base/java.util.stream.MatchOps$MatchOp.evaluateSequential(MatchOps.java:196)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.anyMatch(ReferencePipeline.java:632)
	at org.springframework.sbm.boot.common.finder.SpringBeanMethodDeclarationFinder.lambda$apply$2(SpringBeanMethodDeclarationFinder.java:52)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:178)
	at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596)
	at org.springframework.sbm.boot.common.finder.SpringBeanMethodDeclarationFinder.lambda$apply$6(SpringBeanMethodDeclarationFinder.java:56)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:179)
	at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596)
	at org.springframework.sbm.boot.common.finder.SpringBeanMethodDeclarationFinder.apply(SpringBeanMethodDeclarationFinder.java:45)
	at org.springframework.sbm.boot.common.finder.SpringBeanMethodDeclarationFinder.apply(SpringBeanMethodDeclarationFinder.java:30)
	at org.springframework.sbm.engine.context.ProjectContext.search(ProjectContext.java:77)
	at org.springframework.sbm.boot.upgrade_27_30.report.helper.CommonsMultipartResolverHelper.evaluate(CommonsMultipartResolverHelper.java:51)
	at org.springframework.sbm.boot.upgrade_27_30.report.SpringBootUpgradeReportSection.shouldRender(SpringBootUpgradeReportSection.java:77)
	at org.springframework.sbm.boot.upgrade_27_30.report.SpringBootUpgradeReportAction.lambda$apply$0(SpringBootUpgradeReportAction.java:124)
	at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:178)
	at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625)
	at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
	at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
	at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
	at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
	at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
	at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:596)
	at org.springframework.sbm.boot.upgrade_27_30.report.SpringBootUpgradeReportAction.apply(SpringBootUpgradeReportAction.java:125)
	at org.springframework.sbm.boot.upgrade_27_30.report.SpringBootUpgradeReportAction.applyInternal(SpringBootUpgradeReportAction.java:214)
	at org.springframework.sbm.engine.recipe.Action.applyWithStatusEvent(Action.java:37)
	... 17 more

Any ideas what might cause this problem? I have few other things to report that might help to improve quality of these tools and I will be happy to share my experience.

[fabapp2]

Sorry for my late reply @Elanlum!
The problem might have been that a return type of a void method was expected. This rings a bell at least.
Closing this please open an issue if the problem persists.