I am installing old version of frappe and erpnext in my ubuntu 18.04 mahcine.
Installation was successful but whenever I run bench start it’s showing following error.
Frappe - 6.x.x
Erpnext - 6.x.x
mariadb - 10.2
redis - 3.2.10
Check the status of your redis server.
$ sudo systemctl status redis
If it isn’t active, start the service.
I think you need to downgrade your OS version. coz 18 is not applicable for older version because of the python verson