# Database migration error when launcher rebuild works

**URL:** https://meta.discourse.org/t/database-migration-error-when-launcher-rebuild-works/411531
**Category:** Self-hosting
**Created:** [September 2, 2026, 10:26pm UTC](https://meta.discourse.org/t/database-migration-error-when-launcher-rebuild-works/411531 "2026-09-02T22:26:02Z")
**Posts on this page:** 3
**Page:** 1

<div class="post-metadata">

### Author: ![VictorL](https://avatars.discourse-cdn.com/v4/letter/v/96bed5/32.png) [@VictorL](https://meta.discourse.org/u/VictorL)
#### Post date: [September 2, 2026, 10:26pm UTC](https://meta.discourse.org/t/database-migration-error-when-launcher-rebuild-works/411531/1 "2026-09-02T22:26:02Z")

</div>

Hi. Tried to update self-hosted Discourse using launcher rebuild app. Command ends with database migration error, and forum doesn’t start. What can i do to start? This is a text from the console:

```plaintext
rake aborted!
StandardError: An error has occurred, this and all later migrations canceled: (StandardError)

ERROR: relation "voice_rooms" does not exist
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/rack-mini-profiler-4.0.1/lib/patches/db/pg/alias_method.rb:109:in 'PG::Connection#exec'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/rack-mini-profiler-4.0.1/lib/patches/db/pg/alias_method.rb:109:in 'PG::Connection#async_exec'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/mini_sql-1.6.0/lib/mini_sql/postgres/connection.rb:217:in 'MiniSql::Postgres::Connection#run'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/mini_sql-1.6.0/lib/mini_sql/active_record_postgres/connection.rb:38:in 'block in MiniSql::ActiveRecordPostgres::Connection#run'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/mini_sql-1.6.0/lib/mini_sql/active_record_postgres/connection.rb:34:in 'block in MiniSql::ActiveRecordPostgres::Connection#with_lock'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activesupport-8.0.5.1/lib/active_support/concurrency/null_lock.rb:9:in 'ActiveSupport::Concurrency::NullLock#synchronize'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/mini_sql-1.6.0/lib/mini_sql/active_record_postgres/connection.rb:34:in 'MiniSql::ActiveRecordPostgres::Connection#with_lock'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/mini_sql-1.6.0/lib/mini_sql/active_record_postgres/connection.rb:38:in 'MiniSql::ActiveRecordPostgres::Connection#run'
/var/www/discourse/lib/mini_sql_multisite_connection.rb:109:in 'MiniSqlMultisiteConnection#run'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/mini_sql-1.6.0/lib/mini_sql/postgres/connection.rb:196:in 'MiniSql::Postgres::Connection#exec'
/var/www/discourse/lib/migration/column_dropper.rb:20:in 'Migration::ColumnDropper.mark_readonly'
/var/www/discourse/plugins/voice/db/migrate/20260824214603_mark_chat_thread_title_template_readonly.rb:5:in 'MarkChatThreadTitleTemplateReadonly#up'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:993:in 'Kernel#public_send'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:993:in 'ActiveRecord::Migration#exec_migration'
/var/www/discourse/lib/freedom_patches/schema_migration_details.rb:8:in 'block in FreedomPatches::SchemaMigrationDetails#exec_migration'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/benchmark-0.5.0/lib/benchmark.rb:305:in 'Benchmark.measure'
/var/www/discourse/lib/freedom_patches/schema_migration_details.rb:8:in 'FreedomPatches::SchemaMigrationDetails#exec_migration'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:974:in 'block (2 levels) in ActiveRecord::Migration#migrate'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activesupport-8.0.5.1/lib/active_support/benchmark.rb:17:in 'ActiveSupport::Benchmark.realtime'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:973:in 'block in ActiveRecord::Migration#migrate'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/connection_adapters/abstract/connection_pool.rb:416:in 'ActiveRecord::ConnectionAdapters::ConnectionPool#with_connection'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:972:in 'ActiveRecord::Migration#migrate'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1186:in 'ActiveRecord::MigrationProxy#migrate'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1535:in 'block in ActiveRecord::Migrator#execute_migration_in_transaction'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/connection_adapters/abstract/transaction.rb:626:in 'block in ActiveRecord::ConnectionAdapters::TransactionManager#within_new_transaction'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activesupport-8.0.5.1/lib/active_support/concurrency/null_lock.rb:9:in 'ActiveSupport::Concurrency::NullLock#synchronize'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/connection_adapters/abstract/transaction.rb:623:in 'ActiveRecord::ConnectionAdapters::TransactionManager#within_new_transaction'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/connection_adapters/abstract/database_statements.rb:367:in 'ActiveRecord::ConnectionAdapters::DatabaseStatements#within_new_transaction'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/connection_adapters/abstract/database_statements.rb:359:in 'ActiveRecord::ConnectionAdapters::DatabaseStatements#transaction'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1586:in 'ActiveRecord::Migrator#ddl_transaction'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1534:in 'ActiveRecord::Migrator#execute_migration_in_transaction'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1508:in 'Array#each'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1508:in 'ActiveRecord::Migrator#migrate_without_lock'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1453:in 'block in ActiveRecord::Migrator#migrate'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1606:in 'ActiveRecord::Migrator#with_advisory_lock'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1453:in 'ActiveRecord::Migrator#migrate'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1260:in 'ActiveRecord::MigrationContext#up'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1235:in 'ActiveRecord::MigrationContext#migrate'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/tasks/database_tasks.rb:270:in 'ActiveRecord::Tasks::DatabaseTasks#migrate'
/var/www/discourse/lib/tasks/db.rake:135:in 'Object#execute_db_migration'
/var/www/discourse/lib/tasks/db.rake:263:in 'block (2 levels) in '
/var/www/discourse/lib/distributed_mutex.rb:53:in 'block in DistributedMutex#synchronize'
/var/www/discourse/lib/distributed_mutex.rb:49:in 'Thread::Mutex#synchronize'
/var/www/discourse/lib/distributed_mutex.rb:49:in 'DistributedMutex#synchronize'
/var/www/discourse/lib/distributed_mutex.rb:34:in 'DistributedMutex.synchronize'
/var/www/discourse/lib/tasks/db.rake:240:in 'block in '
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/rake-13.4.2/exe/rake:27:in '<top (required)>'
/usr/local/bin/bundle:25:in 'Kernel#load'
/usr/local/bin/bundle:25:in ''

Caused by:
PG::UndefinedTable: ERROR: relation "voice_rooms" does not exist (PG::UndefinedTable)
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/rack-mini-profiler-4.0.1/lib/patches/db/pg/alias_method.rb:109:in 'PG::Connection#exec'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/rack-mini-profiler-4.0.1/lib/patches/db/pg/alias_method.rb:109:in 'PG::Connection#async_exec'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/mini_sql-1.6.0/lib/mini_sql/postgres/connection.rb:217:in 'MiniSql::Postgres::Connection#run'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/mini_sql-1.6.0/lib/mini_sql/active_record_postgres/connection.rb:38:in 'block in MiniSql::ActiveRecordPostgres::Connection#run'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/mini_sql-1.6.0/lib/mini_sql/active_record_postgres/connection.rb:34:in 'block in MiniSql::ActiveRecordPostgres::Connection#with_lock'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activesupport-8.0.5.1/lib/active_support/concurrency/null_lock.rb:9:in 'ActiveSupport::Concurrency::NullLock#synchronize'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/mini_sql-1.6.0/lib/mini_sql/active_record_postgres/connection.rb:34:in 'MiniSql::ActiveRecordPostgres::Connection#with_lock'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/mini_sql-1.6.0/lib/mini_sql/active_record_postgres/connection.rb:38:in 'MiniSql::ActiveRecordPostgres::Connection#run'
/var/www/discourse/lib/mini_sql_multisite_connection.rb:109:in 'MiniSqlMultisiteConnection#run'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/mini_sql-1.6.0/lib/mini_sql/postgres/connection.rb:196:in 'MiniSql::Postgres::Connection#exec'
/var/www/discourse/lib/migration/column_dropper.rb:20:in 'Migration::ColumnDropper.mark_readonly'
/var/www/discourse/plugins/voice/db/migrate/20260824214603_mark_chat_thread_title_template_readonly.rb:5:in 'MarkChatThreadTitleTemplateReadonly#up'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:993:in 'Kernel#public_send'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:993:in 'ActiveRecord::Migration#exec_migration'
/var/www/discourse/lib/freedom_patches/schema_migration_details.rb:8:in 'block in FreedomPatches::SchemaMigrationDetails#exec_migration'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/benchmark-0.5.0/lib/benchmark.rb:305:in 'Benchmark.measure'
/var/www/discourse/lib/freedom_patches/schema_migration_details.rb:8:in 'FreedomPatches::SchemaMigrationDetails#exec_migration'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:974:in 'block (2 levels) in ActiveRecord::Migration#migrate'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activesupport-8.0.5.1/lib/active_support/benchmark.rb:17:in 'ActiveSupport::Benchmark.realtime'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:973:in 'block in ActiveRecord::Migration#migrate'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/connection_adapters/abstract/connection_pool.rb:416:in 'ActiveRecord::ConnectionAdapters::ConnectionPool#with_connection'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:972:in 'ActiveRecord::Migration#migrate'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1186:in 'ActiveRecord::MigrationProxy#migrate'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1535:in 'block in ActiveRecord::Migrator#execute_migration_in_transaction'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/connection_adapters/abstract/transaction.rb:626:in 'block in ActiveRecord::ConnectionAdapters::TransactionManager#within_new_transaction'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activesupport-8.0.5.1/lib/active_support/concurrency/null_lock.rb:9:in 'ActiveSupport::Concurrency::NullLock#synchronize'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/connection_adapters/abstract/transaction.rb:623:in 'ActiveRecord::ConnectionAdapters::TransactionManager#within_new_transaction'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/connection_adapters/abstract/database_statements.rb:367:in 'ActiveRecord::ConnectionAdapters::DatabaseStatements#within_new_transaction'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/connection_adapters/abstract/database_statements.rb:359:in 'ActiveRecord::ConnectionAdapters::DatabaseStatements#transaction'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1586:in 'ActiveRecord::Migrator#ddl_transaction'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1534:in 'ActiveRecord::Migrator#execute_migration_in_transaction'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1508:in 'Array#each'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1508:in 'ActiveRecord::Migrator#migrate_without_lock'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1453:in 'block in ActiveRecord::Migrator#migrate'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1606:in 'ActiveRecord::Migrator#with_advisory_lock'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1453:in 'ActiveRecord::Migrator#migrate'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1260:in 'ActiveRecord::MigrationContext#up'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/migration.rb:1235:in 'ActiveRecord::MigrationContext#migrate'
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/activerecord-8.0.5.1/lib/active_record/tasks/database_tasks.rb:270:in 'ActiveRecord::Tasks::DatabaseTasks#migrate'
/var/www/discourse/lib/tasks/db.rake:135:in 'Object#execute_db_migration'
/var/www/discourse/lib/tasks/db.rake:263:in 'block (2 levels) in '
/var/www/discourse/lib/distributed_mutex.rb:53:in 'block in DistributedMutex#synchronize'
/var/www/discourse/lib/distributed_mutex.rb:49:in 'Thread::Mutex#synchronize'
/var/www/discourse/lib/distributed_mutex.rb:49:in 'DistributedMutex#synchronize'
/var/www/discourse/lib/distributed_mutex.rb:34:in 'DistributedMutex.synchronize'
/var/www/discourse/lib/tasks/db.rake:240:in 'block in '
/var/www/discourse/vendor/bundle/ruby/3.4.0/gems/rake-13.4.2/exe/rake:27:in '<top (required)>'
/usr/local/bin/bundle:25:in 'Kernel#load'
/usr/local/bin/bundle:25:in ''
Tasks: TOP => db:migrate
(See full trace by running task with --trace)

```

---

<div class="post-metadata">

### Author: ![Jagster](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/jagster/32/192154_2.png) [@Jagster](https://meta.discourse.org/u/Jagster)
#### Post date: [September 3, 2026, 4:48am UTC](https://meta.discourse.org/t/database-migration-error-when-launcher-rebuild-works/411531/2 "2026-09-03T04:48:53Z")

</div>

Same than this:

> [@Fatal: could not read Username for 'https://github.com'](https://meta.discourse.org/t/fatal-could-not-read-username-for-https-github-com/411498/4):
>
> Propably it is. Sounds that way. It started earlier today, and I would guess it came when Voice was added into core. But that is just a feeling. We’ll have to just wait man_shrugging now I really like 2-container solution…

Just wait.

---

<div class="post-metadata">

### Author: ![VictorL](https://avatars.discourse-cdn.com/v4/letter/v/96bed5/32.png) [@VictorL](https://meta.discourse.org/u/VictorL)
#### Post date: [September 3, 2026, 6:05am UTC](https://meta.discourse.org/t/database-migration-error-when-launcher-rebuild-works/411531/3 "2026-09-03T06:05:43Z")

</div>

Hi. Thanks for reply.

No that errors were when rebuild was running. But i had some network errors (connection reset by peer etc) while downloading files from github, npmjs. Probably that was a problem (previous migration file could not be downloaded), but i can’t say it exactly.