I have updated IBM BPM version 8.6.0 to IBM Business Automation Workflow V18.0.0.2 by following below documentation.
IBM BPM upgarde to IBM Business Automation Workflow V18.0.0.2
In the above documentation I have executed all the commands, only one command createProcedure_ProcessServer.sql was not successful and the optional commands i have not executed.
Now after doing all these things IBM BPM was upgraded as i can see the process portal/admin/center login page name is chnaged and also the additional rest api for sharing "saved searches" and RPA task is available. but when I am trying to access case builder it is giving me below error.