How to Generate a Wildcard SSL CSR on cyberpanel

How to generate a Wildcard SSL CSR on cyberpanel?
I found onluy this answer: SSH to your server, use this command:
openssl req -new -newkey rsa:2048 -nodes -keyout mydomain.key -out mydomain.csr


I found how to create csr but i do not understand how to get it. Any help would be appreciated.

check this

this material is outdated, it is possible to get certificate by DNS records through
Let’s Encrypt, but it should be added to the panel.