I've installed Oracle Linux on virtualbox from a windows 10 host.
Then I've successfully installed Oracle XE, but when trying to configure the database I run into problems.
I do: sudo -s
then: /etc/init.d/oracle-xe-18c configure
then I give it the passwords
Then I get this error:

enter image description here
This is the permissions for the /opt/oracle folder:

Should they changed? I'm doing this as root?
Any help is very much appreciated.