is it possible to install another instance of ISPConfig on the same machine. I want to do this as I am not able to create new clients. the clients I had imported from my old server is working though. I had run rsync as well. but adding new client is not working. ubuntu server 18.04 ISPCONFIG version - 3.29
If you mean in another VM in the same physical machine, e.g. VMs managed via proxmox, then it is fine.
Instead of another instance of ISPConfig, would it be more sensible to fix this error? So new clients could be added to the existing ISPConfig. See https://forum.howtoforge.com/threads/please-read-before-posting.58408/