ACS data transfer java issue

Not sure if this is the correct list or not ...

I'm trying to run a data transfer using QSH.

qsh cmd('java -cp /home/xxxxxxx/acsbundle.jar -jar acsbundle.jar +
/plugin=DOWNLOAD /home/xxxxxxx/datatransfertest.dtfx;java -cp +
/home/xxxxxxx/acsbundle.jar -jar acsbundle.jar /plugin=MAINT +
/KILLDAEMON')

I get the following error:

Exception in thread "main" java.lang.UnsupportedClassVersionError: JVMCFRE003
bad major version; class=com/ibm/iaccess/launch/AcsLaunchPad, offset=6
at java.lang.ClassLoader.defineClassImpl(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:286)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java
:74)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:563)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:474)
at java.net.URLClassLoader.access$300(URLClassLoader.java:77)
at java.net.URLClassLoader$ClassFinder.run(URLClassLoader.java:1059)
at java.security.AccessController.doPrivileged(AccessController.java:
448)
at java.net.URLClassLoader.findClass(URLClassLoader.java:452)
at java.lang.ClassLoader.loadClass(ClassLoader.java:676)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:358)
at java.lang.ClassLoader.loadClass(ClassLoader.java:642)
Exception in thread "main" java.lang.NoClassDefFoundError: .home.xxxxxxx.acsb
undle.jar
Caused by: java.lang.ClassNotFoundException: .home.xxxxxxx.acsbundle.jar
at java.net.URLClassLoader.findClass(URLClassLoader.java:457)
at java.lang.ClassLoader.loadClass(ClassLoader.java:676)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:358)
at java.lang.ClassLoader.loadClass(ClassLoader.java:642)
Press ENTER to end terminal session.

When I Google JVMCFRE003 it appears as though there's a Java version mismatch (https://www-01.ibm.com/support/docview.wss?uid=swg1JR46369).

My ACS java version is 1.8.0_211, and the IBM i version is 1.6.0

Thanks in advance.

Jeff