我正在尝试在Heroku上运行迁移，并且我正在跟踪权限级别的错误。
PG::InsufficientPrivilege: ERROR: permission denied for relation schema_migrations
: INSERT INTO "schema_migrations" ("version") VALUES ($1) RETURNING "version"
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.0.6/lib/active_record/connection_adapters/postgresql_adapter.rb:598:in `async_exec'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.0.6/lib/active_record/connection_adapters/postgresql_adapter.rb:598:in `block in exec_no_cache'
/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.0.6/lib/active_record/connection_adapters/abstract_adapter.rb:590:in `block in log'
/app/vendor/bundle/ruby/2.3.0/gems/activesupport-5.0.6/lib/active_support/notifications/instrumenter.rb:21:in `instrument'
我的heroku pg:info输出
Plan: Hobby-dev
Status: Available
Connections: 0/20
PG Version: 10.3
Created: 2018-01-18 06:17 UTC
Data Size: 7.6 MB
Tables: 0
Rows: 0/10000 (In compliance)
Fork/Follow: Unsupported
Rollback: Unsupported
Continuous Protection: Off
Add-on: postgresql-rugged-85486