FATAL MISTAKE WITH POSTGRE MANAGER

First of all, good evenings.

I am in big problems. Recently I have take charge of the management of a
POSTGRESQL database.

I was investigating how it was working. In a mistake I remove the
superuser role to postgres user

Of course, there is not another user thar had this role,

It is installed in a linux, so I was thinking if there is a way to do it
with the root user. Is there any way to rollback it?

Thanks you in advance

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