おっしゃる通り、以前のエラーは以下の通りです：
ERROR: could not create unique index "index_tags_on_lower_name"
DETAIL: Key (lower(name::text))=(زبا�) is duplicated.
EXCEPTION: psql failed: DETAIL: Key (lower(name::text))=(زبا�) is duplicated.
これはおそらく、すでに以下の場所で報告されているものだと思います：Can't restore due to corrupt indexes (with some clues on how to deal with corrupt indexes) および There are some duplicated tags due to database corruption and I can't merge 。