Error when setup database

Went through all the steps with a clean config, no containers. Same issue. I’m running DSM 6.2.2-24922 Update 4 on a DS218+ if that matters. Interestingly enough, docker exec -it mariadb mysql -u root worked and I was able to create the librenms DB via the CLI. Then I ran into the time out issue during the setup_database script. But then I tried again docker exec -it mariadb mysql -u root and got ERROR 1045 (28000): Access denied for user ‘root’@‘localhost’ (using password: NO) ??!! This is weird. I can’t even access the CLI with docker exec -it mariadb mysql -u root -p
Enter password:
ERROR 1045 (28000): Access denied for user ‘root’@‘localhost’ (using password: YES)

I don’t know where that leave me. I don’t have any load on the NAS.