Fix UnsupportedClassVersionError

✅ Solution

The "UnsupportedClassVersionError" in xgboost usually indicates that the Java runtime environment (JRE) being used is older than what was used to compile xgboost's Java components. To fix it, upgrade your JRE to a version that is compatible with the xgboost Java library, ideally Java 17 or later, and ensure your JAVA_HOME environment variable points to the new JRE installation. Verify that your system PATH includes the updated Java installation's bin directory to ensure the correct Java version is being used.