Hello dear community members. It's been a while. This week, we upgraded our server from 7.5 to 8.2. We have RM server running as a JBOSS instance on a cloud machine with Ubuntu 14.04. This is not a client facing server but we use it extensively for internal purposes as when projects demand. This morning I logged in to the admin page to add a user to the server and noticed this error being displayed at the top.

I looked up the issue in the community forum however a re-install is not an immediate option. Also I cannot easily mess with java settings on that server as I'm not very proficient in Bash and we have a small java based graph db running on that server as well. Our IT team is located offsite and immediate availability is an issue sometimes. But certain jobs have been halted due to this issue now. I'm data analyst, and server troubleshooting isn't my strongest suite. Is there anything I can do to fix it myself? Attached are the job-agent logs, I could not find where to look for the server logs. Thank you.