Opendkim error Ubuntu 22.04

I am installing postfix/dovecot/roundcube. Using Webmin as a CP so both Postfix and Dovecot is alreadi installed. I follow the tutorials from Linuxbabe. For the moment I am installing opendkim and when ready and test it with
sudo opendkim-testkey -d -s default -vvv but get this error
All help valuable, I dont know where to look for the syntax error

opendkim-testkey: using default configfile /etc/opendkim.conf
opendkim-testkey: checking key ‘’
opendkim-testkey: syntax error in key data (ASCII 0x49 at offset 28)

Should there be a period after “default” in your test command?

There is in the error message.