Seeing this message: WARNING: Illegal reflective access by com.wily.introscope.api.instrument.JavaRedefineRetransformBean to method sun.instrument.InstrumentationImpl.isRetransformClassesSupported() An illegal reflective access operation has occurred
If your application is non-modular and looking for only compatibility support i.e. apps running on JRE 7, 8 on JVM 11 that should work today. But full compatibility with Java 11 may take longer. This seems to be your focus.