添加新实例时多实例迁移失败

[twofoursixeight]

我对这个主题没有最好的想法，但我可以尝试提供帮助。
这个话题相关：

Migration failed upgrading to latest from ~3 weeks ago

1 migrations failed! Failed to migrate default #<StandardError: An error has occurred, all later migrations canceled: PG::UniqueViolation: ERROR: duplicate key value violates unique constraint "index_user_emails_on_email" DETAIL: Key (lower(email::text))=(talk@remobjects.com<mailto:talk@remobjects.com) already exists. > /var/www/discourse/vendor/bundle/ruby/2.7.0/gems/rack-mini-profiler-2.3.3/lib/patches/db/pg.rb:110:in `exec' /var/www/discourse/vendor/bundle/ruby/2.7.0/gems/rack-mini-profil…