When I run "gradlew clean deployNodes" or "gradlew deployNodes", I get a warning on Quasar library: QUASAR WARNING: Quasar Java Agent isn't running. If you're using another instrumentation method you can ignore this message; otherwise, please refer to the Getting Started section in the Quasar documentation.
How can i fix this warning ?
I upgraded Corda to 4.1
you'll want to double-check the intellij settings.
Navigate to Build, Execution, Deployment -> Build Tools -> Gradle -> Runner (or search for runner) Windows: this is in "Settings" MacOS: this is in "Preferences" Set "Delegate IDE build/run actions to gradle" to true Set "Run test using:" to "Gradle Test Runner" If you would prefer to use the built in IntelliJ JUnit test runner, you can run gradlew installQuasar which will copy your quasar JAR file to the lib directory. You will then need to specify -javaagent:lib/quasar.jar and set the run directory to the project root directory for each test.
As mentioned in the comments from manish, make sure to try cleaning the gradle cache as well: ./gradlew clean build deployNodes.
Joel has a good answer for a similar quasar issue on this StackOverflow question: Error when running Corda flow tests from IntelliJ
