Troubleshooting

When running this application on a Tomcat server, if you encounter the following error message log, you might want to edit the catalina.sh (for Linux) or catalina.bat (for Windows) and comment out lines which define JDK_JAVA_OPTIONS. This file is located in the tomcat <version>/bin directory.

 Picked up JDK_JAVA_OPTIONS:
--add-opens=java.base/java.lang=ALL-UNNAMED
--add-opens=java.base/java.io=ALL-UNNAMED
--add-opens=java.base/java.util=ALL-UNNAMED
--add-opens=java.base/java.util.concurrent=ALL-UNNAMED
--add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED