This can be a common mistake when using ROLE(a user) who could not open objects to reset them.
As before, you can provide the specific schema that you want to reset, or even use attribute ROLEc SUPERUSER.
, , AWS/RDS, SUPERUSER, , , , .
https://www.postgresql.org/docs/current/static/sql-grant.html , GRANT , , . pg_dumpall, , ROLES.