Getting Error Redis cache server not running. Please contact Administrator / Techsupport error

ERPNext
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Continuing the discussion from Redis cache server not running. Please contact Administrator / Tech support:

I am getting this error. I notice last post was over a year ago. I wold have thought problem should not be there now. We went to Rel 5 in March. Should I be doing Bench Upgrade or is ther something else now.

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The current release is ERPNext 6 with ERPNext 7 around the corner.

bench update --upgrade will upgrade your system, however, I would recommend taking a backup of everything before upgrading.