Cannot invoke "com.intellij.openapi.wm.ToolWindow.getContentManager()" because "tool_window" is null

[Biserkov]

I have the "Re-Run Last Test Action in REPL" button added to the Main toolbar.

When starting the IDE I get the following error. Presumably because there is no REPL running?

Repl$RerunLastTest#Update@MainToolbar (cursive.repl.actions.Repl$RerunLastTest), actionId=:cursive.testing.actions/rerun-last-test, text='Re-Run Last Test Action in REPL'

java.lang.NullPointerException: Cannot invoke "com.intellij.openapi.wm.ToolWindow.getContentManager()" because "tool_window" is null
	at cursive.repl.toolwindow$active_repl_state.invokeStatic(toolwindow.clj:222)
	at cursive.repl.toolwindow$active_repl_state.invoke(toolwindow.clj:217)
	at cursive.testing.actions$can_rerun_QMARK_.invokeStatic(actions.clj:635)
	at cursive.testing.actions$can_rerun_QMARK_.invoke(actions.clj:633)
	at clojure.lang.Var.invoke(Var.java:384)
	at cursive.api.DelayedFn.invoke(DelayedFn.java:31)
	at cursive.repl.actions.Repl$RerunLastTest.isEnabled(Repl.kt:395)
	at cursive.actions.ClojureActionBase.update(ClojureActionBase.java:45)
	at com.intellij.openapi.actionSystem.ex.ActionUtil.lambda$performDumbAwareUpdate$0(ActionUtil.java:164)
	at com.intellij.openapi.actionSystem.ex.ActionUtil.performDumbAwareUpdate(ActionUtil.java:187)
	at com.intellij.openapi.actionSystem.impl.ActionUpdaterKt.doUpdate(ActionUpdater.kt:696)
	at com.intellij.openapi.actionSystem.impl.ActionUpdaterKt.access$doUpdate(ActionUpdater.kt:1)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater$updateActionReal$success$1.invoke(ActionUpdater.kt:110)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater$updateActionReal$success$1.invoke(ActionUpdater.kt:109)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater$callAction$3$adjustedCall$1.invoke(ActionUpdater.kt:157)
	at com.intellij.openapi.application.rw.InternalReadAction.insideReadAction(InternalReadAction.kt:108)
	at com.intellij.openapi.application.rw.InternalReadAction.access$insideReadAction(InternalReadAction.kt:16)
	at com.intellij.openapi.application.rw.InternalReadAction$tryReadCancellable$2.invoke(InternalReadAction.kt:95)
	at com.intellij.openapi.application.rw.InternalReadAction$tryReadCancellable$2.invoke(InternalReadAction.kt:94)
	at com.intellij.openapi.application.rw.CancellableReadActionKt$cancellableReadActionInternal$1.invoke$lambda$1$lambda$0(cancellableReadAction.kt:38)
	at com.intellij.openapi.application.impl.ApplicationImpl.tryRunReadAction(ApplicationImpl.java:1075)
	at com.intellij.openapi.application.rw.CancellableReadActionKt$cancellableReadActionInternal$1.invoke$lambda$1(cancellableReadAction.kt:36)
	at com.intellij.openapi.progress.util.ProgressIndicatorUtilService.runActionAndCancelBeforeWrite(ProgressIndicatorUtilService.java:73)
	at com.intellij.openapi.progress.util.ProgressIndicatorUtils.runActionAndCancelBeforeWrite(ProgressIndicatorUtils.java:128)
	at com.intellij.openapi.application.rw.CancellableReadActionKt$cancellableReadActionInternal$1.invoke(cancellableReadAction.kt:34)
	at com.intellij.openapi.progress.CoroutinesKt.blockingContextInner(coroutines.kt:321)
	at com.intellij.openapi.progress.CoroutinesKt.blockingContext(coroutines.kt:310)
	at com.intellij.openapi.application.rw.CancellableReadActionKt.cancellableReadActionInternal(cancellableReadAction.kt:31)
	at com.intellij.openapi.application.rw.InternalReadAction.tryReadCancellable(InternalReadAction.kt:94)
	at com.intellij.openapi.application.rw.InternalReadAction.tryReadAction(InternalReadAction.kt:78)
	at com.intellij.openapi.application.rw.InternalReadAction.readLoop(InternalReadAction.kt:65)
	at com.intellij.openapi.application.rw.InternalReadAction.access$readLoop(InternalReadAction.kt:16)
	at com.intellij.openapi.application.rw.InternalReadAction$runReadAction$3.invokeSuspend(InternalReadAction.kt:36)
	at com.intellij.openapi.application.rw.InternalReadAction$runReadAction$3.invoke(InternalReadAction.kt)
	at com.intellij.openapi.application.rw.InternalReadAction$runReadAction$3.invoke(InternalReadAction.kt)
	at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:78)
	at kotlinx.coroutines.CoroutineScopeKt.coroutineScope(CoroutineScope.kt:264)
	at com.intellij.openapi.application.rw.InternalReadAction.runReadAction(InternalReadAction.kt:35)
	at com.intellij.openapi.application.rw.PlatformReadWriteActionSupport.executeReadAction(PlatformReadWriteActionSupport.kt:38)
	at com.intellij.openapi.application.ReadWriteActionSupport.executeReadAction$default(ReadWriteActionSupport.kt:15)
	at com.intellij.openapi.application.CoroutinesKt.constrainedReadActionUndispatched(coroutines.kt:82)
	at com.intellij.openapi.application.CoroutinesKt.readActionUndispatched(coroutines.kt:69)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater.callAction(ActionUpdater.kt:740)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater.callAction(ActionUpdater.kt:134)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater.updateActionReal(ActionUpdater.kt:109)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater.update(ActionUpdater.kt:531)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater.expandGroupChild(ActionUpdater.kt:388)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater.access$expandGroupChild(ActionUpdater.kt:71)
	at com.intellij.openapi.actionSystem.impl.ActionUpdater$doExpandActionGroup$2$result$1$1$1.invokeSuspend(ActionUpdater.kt:342)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:108)
	at kotlinx.coroutines.internal.LimitedDispatcher$Worker.run(LimitedDispatcher.kt:115)
	at kotlinx.coroutines.scheduling.TaskImpl.run(Tasks.kt:103)
	at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:584)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:793)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:697)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:684)