ActiveRecord::InvalidForeignKey: Mysql2::Error: Cannot delete or update a parent row: a foreign key constraint fails (`exercism`.`solution_tags`, CONSTRAINT `fk_rails_162648ec79` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`)) (ActiveRecord::InvalidForeignKey)

[ops-handler]

Error

Cannot delete or update a parent row: a foreign key constraint fails (`exercism`.`solution_tags`, CONSTRAINT `fk_rails_162648ec79` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`)) (Mysql2::Error)

Stack trace

mysql2/client.rb:151 in _query
mysql2/client.rb:151 in block in Mysql2::Client#query
mysql2/client.rb:150 in Thread.handle_interrupt
mysql2/client.rb:150 in query
active_record/connection_adapters/mysql2/database_statements.rb:100 in block (2 levels) in ActiveRecord::ConnectionAdapters::Mysql2::DatabaseStatements#raw_execute
active_record/connection_adapters/abstract_adapter.rb:1027 in block in ActiveRecord::ConnectionAdapters::AbstractAdapter#with_raw_connection
active_support/concurrency/null_lock.rb:9 in synchronize
active_record/connection_adapters/abstract_adapter.rb:999 in with_raw_connection
active_record/connection_adapters/mysql2/database_statements.rb:98 in block in ActiveRecord::ConnectionAdapters::Mysql2::DatabaseStatements#raw_execute
active_support/notifications/instrumenter.rb:58 in instrument

Tracking Details

• Project: exercism-rails
• Sentry: ActiveRecord::InvalidForeignKey: Mysql2::Error: Cannot delete or update a parent row: a foreign key constraint fails (exercism.solution_tags, CONSTRAINT fk_rails_162648ec79 FOREIGN KEY (user_id) REFERENCES users (id)) (ActiveRecord::InvalidForeignKey)
• Culprit: 设置Controller#destroy_account
• First seen: Aug 28, 2026