No AuthKey Specified

This message comes up when I try to launch my server but the thing is that the Auth Key is in fact in the file.
"[25/09/23 15:24:44] [ERROR] No AuthKey specified in the “ServerConfig.toml” file. Please get an AuthKey, enter it into the config file, and restart this server.

Either the config file has not been saved or the server was not closed for the changes to apply, since it doesn’t look like there are typing errors.
I’d start from scratch with that server, so try to reinstall it.