I can't see the created menus in admin, nor create new ones

Hello!

I’m using a Multisite configuration, and all custom menus worked for me yesterday, in 3 sites.

Today they’re working, but not accesible from admin panel, seems like they dissapeared. I can’t see the new ones I create nor see the old ones.

I’ve changed to Fourteen theme and disabled all plugins without success. I’ve removed all cache and cookies, without success too. The only change I did today after woke up is to update this packages:

curl libcurl3 libcurl3-gnutls libmariadbclient18 libmysqlclient18
libssl1.0.0 mariadb-client-5.5 mariadb-client-core-5.5 mariadb-common
mariadb-server mariadb-server-5.5 mariadb-server-core-5.5 mysql-common
openssl

I think it’s related to mysql update because I can see any databases now. But if mysql isn’t working, how can be working the public website? :-/

Also:
/dev/xvdb 2064208 68608 1890744 4% /ddbb
is empty!

Seems like databases were moved to another location, /var/lib/mysql, because with them websites are working, but what’s the reason for not seeing the menus and others then?

Have anyone an idea?

Best.