```Android Studio 4.1 Canary 2
Build #AI-193.6494.35.41.6264773, built on March 5, 2020
Runtime version: 1.8.0_242-release-1644-b3-6222593 x86_64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
macOS 10.15.3
GC: ParNew, ConcurrentMarkSweep
Memory: 1979M
Cores: 12
Registry: ide.new.welcome.screen.force=true, ide.suppress.double.click.handler=true
Non-Bundled Plugins: com.urswolfer.intellij.plugin.gerrit
```
Version of Gradle Plugin: 3.6.1
Version of Gradle: 6.2.2

Steps to Reproduce:
1. Open a project
2. Press the run button or debug button in the toolbar
3. Try the same for JUnit tests
4. Notice that the Run button (or debug if you pressed that) is now disabled
5. Same result when running JUnit tests via the run button in the gutter inside the editor

Stacktrace:
```
java.lang.NullPointerException
at com.android.tools.tracer.agent.Tracer.addVmArgs(Tracer.java:208)
at com.android.tools.tracer.Trace.addVmArgs(Trace.java)
at com.android.tools.idea.gradle.project.build.invoker.GradleBuildInvoker.executeTasks(GradleBuildInvoker.java:392)
at com.android.tools.idea.gradle.project.build.invoker.GradleBuildInvoker.lambda$executeTasks$4(GradleBuildInvoker.java:359)
at com.google.common.collect.Maps$KeySet.lambda$forEach$0(Maps.java:3705)
at java.util.HashMap.forEach(HashMap.java:1289)
at com.google.common.collect.Maps$KeySet.forEach(Maps.java:3705)
at com.android.tools.idea.gradle.project.build.invoker.GradleBuildInvoker.executeTasks(GradleBuildInvoker.java:359)
at com.android.tools.idea.gradle.run.GradleTaskRunner$DefaultGradleTaskRunner.lambda$run$1(GradleTaskRunner.java:92)
at com.intellij.openapi.application.TransactionGuardImpl.runSyncTransaction(TransactionGuardImpl.java:83)
at com.intellij.openapi.application.TransactionGuardImpl.lambda$submitTransaction$1(TransactionGuardImpl.java:107)
at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.doRun(LaterInvocator.java:441)
at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.runNextEvent(LaterInvocator.java:424)
at com.intellij.openapi.application.impl.LaterInvocator$FlushQueue.run(LaterInvocator.java:407)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:764)
at java.awt.EventQueue.access$500(EventQueue.java:98)
at java.awt.EventQueue$3.run(EventQueue.java:715)
at java.awt.EventQueue$3.run(EventQueue.java:709)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:734)
at com.intellij.ide.IdeEventQueue.defaultDispatchEvent(IdeEventQueue.java:908)
at com.intellij.ide.IdeEventQueue._dispatchEvent(IdeEventQueue.java:781)
at com.intellij.ide.IdeEventQueue.lambda$dispatchEvent$8(IdeEventQueue.java:424)
at com.intellij.openapi.progress.impl.CoreProgressManager.computePrioritized(CoreProgressManager.java:698)
at com.intellij.ide.IdeEventQueue.dispatchEvent(IdeEventQueue.java:423)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
```