IDE Error occured
I don't really know where this comes from but I see it in several projects when I have the Fluid plugin (v2.6.0) activated.
java.lang.Throwable: Stub index points to a file without PSI: file = file:///home/jonas/src/github.com/dmind-gmbh/<redacted>/vendor/swiftmailer/swiftmailer/tests/acceptance/Swift/ByteStream, file type = com.intellij.openapi.fileTypes.UnknownFileType@4b62bfab, indexed file type = com.jetbrains.php.lang.PhpFileType@3c977805, indexing stamp info = null, used scope = Project and Libraries
at com.intellij.openapi.diagnostic.Logger.error(Logger.java:182)
at com.intellij.psi.stubs.StubProcessingHelperBase.processStubsInFile(StubProcessingHelperBase.java:52)
at com.intellij.psi.stubs.StubIndexImpl.lambda$processElements$2(StubIndexImpl.java:300)
at com.intellij.psi.stubs.StubIndexImpl.processElements(StubIndexImpl.java:346)
at com.intellij.psi.stubs.StubIndex.getElements(StubIndex.java:100)
at com.intellij.psi.stubs.StubIndex.getElements(StubIndex.java:88)
at com.jetbrains.php.PhpIndexImpl.getElements(PhpIndexImpl.java:592)
at com.jetbrains.php.PhpIndexImpl.getDirectSubclassesInner(PhpIndexImpl.java:632)
at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1705)
at com.jetbrains.php.PhpIndexImpl.getDirectSubclasses(PhpIndexImpl.java:627)
at com.jetbrains.php.PhpIndexImpl.fillAllSubclasses(PhpIndexImpl.java:651)
at com.jetbrains.php.PhpIndexImpl.getAllSubclasses(PhpIndexImpl.java:645)
at com.jetbrains.php.lang.psi.elements.impl.MemberReferenceImpl.subClasses(MemberReferenceImpl.java:287)
at com.jetbrains.php.lang.psi.elements.impl.MemberReferenceImpl.lambda$subclasses$9(MemberReferenceImpl.java:283)
at java.base/java.util.stream.ReferencePipeline$7$1.accept(ReferencePipeline.java:271)
at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177)
at it.unimi.dsi.fastutil.objects.ObjectOpenCustomHashSet$SetSpliterator.forEachRemaining(ObjectOpenCustomHashSet.java:549)
at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484)
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474)
at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497)
at one.util.streamex.AbstractStreamEx.forEach(AbstractStreamEx.java:359)
at com.jetbrains.php.lang.psi.elements.impl.PhpBaseMemberReference.resolveGlobal(PhpBaseMemberReference.java:59)
at com.jetbrains.php.lang.psi.elements.impl.MemberReferenceImpl.resolveGlobal(MemberReferenceImpl.java:167)
at com.jetbrains.php.lang.psi.elements.impl.MethodReferenceImpl.resolveGlobal(MethodReferenceImpl.java:103)
at com.jetbrains.php.lang.psi.elements.impl.PhpReferenceImpl.lambda$static$0(PhpReferenceImpl.java:159)
at com.intellij.psi.impl.source.resolve.ResolveCache$PolyVariantResolver.resolve(ResolveCache.java:69)
at com.intellij.psi.impl.source.resolve.ResolveCache.lambda$resolve$1(ResolveCache.java:154)
at com.intellij.openapi.util.Computable.get(Computable.java:18)
at com.intellij.psi.impl.source.resolve.ResolveCache.lambda$loggingResolver$4(ResolveCache.java:260)
at com.intellij.openapi.util.RecursionManager$1.computePreventingRecursion(RecursionManager.java:114)
at com.intellij.openapi.util.RecursionGuard.doPreventingRecursion(RecursionGuard.java:44)
at com.intellij.openapi.util.RecursionManager.doPreventingRecursion(RecursionManager.java:68)
at com.intellij.psi.impl.source.resolve.ResolveCache.resolve(ResolveCache.java:237)
at com.intellij.psi.impl.source.resolve.ResolveCache.resolve(ResolveCache.java:154)
at com.intellij.psi.impl.source.resolve.ResolveCache.resolveWithCaching(ResolveCache.java:169)
at com.intellij.psi.impl.source.resolve.ResolveCache.resolveWithCaching(ResolveCache.java:162)
at com.jetbrains.php.lang.psi.elements.impl.PhpReferenceImpl.multiResolve(PhpReferenceImpl.java:153)
at com.jetbrains.php.lang.psi.elements.impl.MethodReferenceImpl.resolve(MethodReferenceImpl.java:147)
at com.jetbrains.php.lang.psi.elements.impl.MethodReferenceImpl.resolve(MethodReferenceImpl.java:142)
at de.sgalinski.fluid.editor.builder.ViewHelperArgumentBuilder.getArgumentsFromMethod(ViewHelperArgumentBuilder.java:131)
at de.sgalinski.fluid.editor.builder.ViewHelperArgumentBuilder.getArgumentsFromClass(ViewHelperArgumentBuilder.java:45)
at de.sgalinski.fluid.editor.annotator.FluidInlineAnnotator.checkIfValidViewHelper(FluidInlineAnnotator.java:328)
at de.sgalinski.fluid.editor.annotator.FluidInlineAnnotator.annotate(FluidInlineAnnotator.java:84)
at com.intellij.codeInsight.daemon.impl.DefaultHighlightVisitor.runAnnotators(DefaultHighlightVisitor.java:131)
at com.intellij.codeInsight.daemon.impl.DefaultHighlightVisitor.visit(DefaultHighlightVisitor.java:108)
at com.intellij.codeInsight.daemon.impl.InjectedGeneralHighlightingPass.lambda$runHighlightVisitorsForInjected$5(InjectedGeneralHighlightingPass.java:368)
at com.intellij.codeInsight.daemon.impl.DefaultHighlightVisitor.analyze(DefaultHighlightVisitor.java:93)
at com.intellij.codeInsight.daemon.impl.InjectedGeneralHighlightingPass.runHighlightVisitorsForInjected(InjectedGeneralHighlightingPass.java:365)
at com.intellij.codeInsight.daemon.impl.InjectedGeneralHighlightingPass.addInjectedPsiHighlights(InjectedGeneralHighlightingPass.java:243)
at com.intellij.codeInsight.daemon.impl.InjectedGeneralHighlightingPass.lambda$addInjectedPsiHighlights$4(InjectedGeneralHighlightingPass.java:206)
at com.intellij.concurrency.ApplierCompleter.execAndForkSubTasks(ApplierCompleter.java:136)
at com.intellij.concurrency.ApplierCompleter.execAndForkSubTasks(ApplierCompleter.java:149)
at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1084)
at com.intellij.concurrency.ApplierCompleter.lambda$wrapInReadActionAndIndicator$1(ApplierCompleter.java:92)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$executeProcessUnderProgress$12(CoreProgressManager.java:624)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:698)
at com.intellij.openapi.progress.impl.CoreProgressManager.computeUnderProgress(CoreProgressManager.java:646)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:623)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:66)
at com.intellij.concurrency.ApplierCompleter.wrapInReadActionAndIndicator(ApplierCompleter.java:104)
at com.intellij.concurrency.ApplierCompleter.lambda$compute$0(ApplierCompleter.java:83)
at com.intellij.openapi.application.impl.ReadMostlyRWLock.executeByImpatientReader(ReadMostlyRWLock.java:174)
at com.intellij.openapi.application.impl.ApplicationImpl.executeByImpatientReader(ApplicationImpl.java:181)
at com.intellij.concurrency.ApplierCompleter.compute(ApplierCompleter.java:83)
at java.base/java.util.concurrent.CountedCompleter.exec(CountedCompleter.java:746)
at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290)
at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(ForkJoinPool.java:1020)
at java.base/java.util.concurrent.ForkJoinPool.scan(ForkJoinPool.java:1656)
at java.base/java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1594)
at java.base/java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:183)