ERROR: Script failed, exit code 255

R12.2 Adpreclone Fails When Creating WLS Config Archive : Exit Code 255
CAUSE
The issue is caused by some remaining active sessions in WLS (WebLogic Server)
SOLUTION
To implement the solution, please execute the following steps:
1. Stop all services from patch and run editions.
    You can use EBSapps.env to ensure that you are on the correct file edition.
2. Restart the environment.
3. Rerun adpreclone.
NOTE:
If one still has the same issue, please ensure that the FND_NODES table is reflecting the correct setup of your environment and check on all your nodes that the hosts file is correctly formatted and autoconfig was run successfully.