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IBM ELM : facing error com.ibm.team.process.internal.service.web.ProcessWebUIService" service failed to activate

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This is a forum and not support. Please open a case with support. They will be able to help you with collecting the diagnostics and the logs and then uploading them.
With respect to your other question: https://jazz.net/forum/questions/290444/error-extracting-keyentry-aliases-from-pfx
I would be extremely concerned that there are rogue users making uncoordinated changes without testing. There is a high likelihood that such uncoordinated changes can destroy the system.