Can't convert database from sqlite to mariadb [solved]

Hi, I am using nextcloud 13.0.5, on archlinux with apache-2.4.34 andphp-7.2.8 I have been testing it with sqlite, and now I would like to convert to MariaDB. However, when I follow the documentation, I get

php occ db:convert-type --all-apps mysql sennin localhost nextcloud
What is the database password?
Creating schema in new database

[Doctrine\DBAL\Exception\TableNotFoundException]
An exception occurred while executing ‘SELECT * FROM “oc_spreedme_rooms”’:
SQLSTATE[HY000]: General error: 1 no such table: oc_spreedme_rooms

[Doctrine\DBAL\Driver\PDOException]
SQLSTATE[HY000]: General error: 1 no such table: oc_spreedme_rooms

[PDOException]
SQLSTATE[HY000]: General error: 1 no such table: oc_spreedme_rooms

db:convert-type [–port PORT] [–password PASSWORD] [–clear-schema] [–all-apps] [–chunk-size CHUNK-SIZE] [–]

Would anyone know how to solve this issue?

I solved the issue by using sqlite3 command line to remove most of lines in the sqlite database that refers to spreed. (and dump and restore). Probably it would have been enough to remove lines frome oc_migrations table.