Reflection Errors reported When Running Connection Server 9.1 with Oracle JDK 11 or Amazon Corretto 11
When running the ThingWorx Connection Server with Oracle JDK 11 or Amazon Corretto 11, the following WARNING messages are output to the Console:
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.google.inject.internal.cglib.core.$ReflectUtils$1 (file:/C:/connection-server-9.1.1.8/lib/guice-4.1.0.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
WARNING: Please consider reporting this to the maintainers of com.google.inject.internal.cglib.core.$ReflectUtils$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
In addition, the following messages are logged in the cxserver.log file when the log level is DEBUG or TRACE:
10:59:22.601 [main] DEBUG i.n.util.internal.PlatformDependent0 - direct buffer constructor: unavailablejava.lang.UnsupportedOperationException: Reflective setAccessible(true) disabled
/* Further stack trace will appear in log, but is left out here for the sake of brevity. */
These are warning messages that can be safely ignored. They do not impact the operability of the system.