Phpmyadmin default credentials

I just installed the phpmyadmin container using this command

docker pull ghcr.io/linuxserver/phpmyadmin
docker run -d \
 --restart=always \
 --name phpmyadmin \
 -h phpmyadmin \
 -e PUID=1001 \
 -e PGID=1001 \
 -e TZ=Europe/Nicosia \
 --net=network \
 -p 9001:80 \
 -v phpmyadmin:/config \
 ghcr.io/linuxserver/phpmyadmin

I am able to access the login screen but I don’t know the default credentials and I can’t find any relevant information on the docker hub page of the container.

What I’m I missing here?
Thanks

I added the

-e PMA_ARBITRARY=1

variable and it let me login

Thanks