org.eclipse.swtbot.swt.finder.exceptions.WidgetNotFoundException: The widget was null.
	at org.eclipse.swtbot.swt.finder.widgets.AbstractSWTBot.<init>(AbstractSWTBot.java:113)
	at org.eclipse.swtbot.swt.finder.widgets.AbstractSWTBotControl.<init>(AbstractSWTBotControl.java:50)
	at org.eclipse.swtbot.swt.finder.widgets.SWTBotShell.<init>(SWTBotShell.java:57)
	at org.eclipse.swtbot.swt.finder.widgets.SWTBotShell.<init>(SWTBotShell.java:46)
	at org.eclipse.swtbot.swt.finder.SWTBotFactory.activeShell(SWTBotFactory.java:462)
	at org.eclipse.swtbot.swt.finder.SWTBot.activeShell(SWTBot.java:1)
	at org.eclipse.swtbot.eclipse.finder.SWTWorkbenchBot.activeShell(SWTWorkbenchBot.java:1)
	at org.eclipse.swtbot.swt.finder.SWTBotFactory.menu(SWTBotFactory.java:203)
	at org.eclipse.swtbot.swt.finder.SWTBot.menu(SWTBot.java:1)
	at org.eclipse.swtbot.eclipse.finder.SWTWorkbenchBot.menu(SWTWorkbenchBot.java:1)
	at org.eclipse.swtbot.swt.finder.SWTBotFactory.menu(SWTBotFactory.java:232)
	at org.eclipse.swtbot.swt.finder.SWTBot.menu(SWTBot.java:1)
	at org.eclipse.swtbot.eclipse.finder.SWTWorkbenchBot.menu(SWTWorkbenchBot.java:1)
	at org.moreunit.JavaProjectSWTBotTestHelper.openResource(JavaProjectSWTBotTestHelper.java:131)
	at org.moreunit.refactoring.RenameMethodTest.should_rename_corresponding_test_methods_when_method_gets_renamed(RenameMethodTest.java:38)
	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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
	at org.eclipse.swtbot.swt.finder.junit.internal.CapturingFrameworkMethod.invokeExplosively(CapturingFrameworkMethod.java:49)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
	at org.moreunit.test.context.TestContextRule$StatementInContext.evaluate(TestContextRule.java:244)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)
	at org.eclipse.swtbot.swt.finder.junit.SWTBotJunit4ClassRunner.runChild(SWTBotJunit4ClassRunner.java:77)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:63)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at org.eclipse.swtbot.swt.finder.junit.SWTBotJunit4ClassRunner.run(SWTBotJunit4ClassRunner.java:62)
	at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:316)
	at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:240)
	at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:214)
	at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:155)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.apache.maven.surefire.api.util.ReflectionUtils.invokeMethodWithArray2(ReflectionUtils.java:137)
	at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:148)
	at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:88)
	at org.eclipse.tycho.surefire.osgibooter.OsgiSurefireBooter.run(OsgiSurefireBooter.java:140)
	at org.eclipse.tycho.surefire.osgibooter.AbstractUITestApplication.runTests(AbstractUITestApplication.java:51)
	at org.eclipse.e4.ui.internal.workbench.swt.E4Testable.lambda$0(E4Testable.java:79)
	at java.base/java.lang.Thread.run(Thread.java:840)