java.lang.IllegalStateException: file.virtualFile must not be null
at org.covscript.lang.editing.CovIconProvider.getIcon(cov-editing.kt:34)
at com.intellij.util.PsiIconUtil.getProvidersIcon(PsiIconUtil.java:42)
at com.intellij.psi.impl.ElementBase.computeIconNow(ElementBase.java:101)
at com.intellij.psi.impl.ElementBase.lambda$static$0(ElementBase.java:45)
at com.intellij.ui.DeferredIconImpl.evaluate(DeferredIconImpl.java:278)
at com.intellij.ui.DeferredIconImpl.lambda$null$0(DeferredIconImpl.java:163)
at com.intellij.ui.IconDeferrerImpl.evaluateDeferred(IconDeferrerImpl.java:111)
at com.intellij.ui.DeferredIconImpl.lambda$null$1(DeferredIconImpl.java:163)
at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1134)
at com.intellij.openapi.progress.util.ProgressIndicatorUtils.lambda$runInReadActionWithWriteActionPriority$0(ProgressIndicatorUtils.java:84)
at com.intellij.openapi.progress.util.ProgressIndicatorUtils.lambda$runWithWriteActionPriority$2(ProgressIndicatorUtils.java:140)
at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$1(CoreProgressManager.java:157)
at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:580)
at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:525)
at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:85)
at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:144)
at com.intellij.openapi.progress.util.ProgressIndicatorUtils.runWithWriteActionPriority(ProgressIndicatorUtils.java:138)
at com.intellij.openapi.progress.util.ProgressIndicatorUtils.runInReadActionWithWriteActionPriority(ProgressIndicatorUtils.java:84)
at com.intellij.openapi.progress.util.ProgressIndicatorUtils.runInReadActionWithWriteActionPriority(ProgressIndicatorUtils.java:105)
at com.intellij.ui.DeferredIconImpl.lambda$paintIcon$4(DeferredIconImpl.java:162)
at com.intellij.util.concurrency.BoundedTaskExecutor$2.run(BoundedTaskExecutor.java:212)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)