I am having this error, even generating several different keys continues the error
“global error an error occurred while checking server license key fivem”
There’s probably more going on.
I’m going to guess that you aren’t launching your server from the correct directory (server-data)
See https://docs.fivem.net/server-manual/setting-up-a-server/
If you are certain you are, please post the full console output and show us your folder structure