rails db:migrateをしたらこのようなエラーが出ました。しばらくにらめっこして、エラーを探していましたが、ついには解決すること叶いませんでした。
どなたかご助力を
/home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies/interlock.rb:48:in `block in permit_concurrent_loads' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract/schema_statements.rb:581:in `add_column' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/sqlite3_adapter.rb:352:in `add_reference' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract/connection_pool.rb:416:in `with_connection' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract/database_statements.rb:267:in `transaction' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activerecord-5.2.3/lib/active_record/migration.rb:1011:in `migrate' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `<top (required)>' ActiveRecord::StatementInvalid: SQLite3::SQLException: Cannot add a NOT NULL column with default value NULL: ALTER TABLE "tasks" ADD "user_id" integer NOT NULL /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies/interlock.rb:47:in `permit_concurrent_loads' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract/schema_definitions.rb:527:in `column' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activerecord-5.2.3/lib/active_record/migration.rb:840:in `block in say_with_time' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activerecord-5.2.3/lib/active_record/migration.rb:796:in `migrate' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activerecord-5.2.3/lib/active_record/migration.rb:1343:in `ddl_transaction' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activerecord-5.2.3/lib/active_record/railties/databases.rake:60:in `block (2 levels) in <main>' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `call' /home/ec2-user/environment/taskapp/bin/spring:15:in `<top (required)>' bin/rails:3:in `<main>' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/sqlite3-1.3.13/lib/sqlite3/database.rb:137:in `execute' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract_adapter.rb:571:in `log' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract/schema_definitions.rb:141:in `add_to' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activerecord-5.2.3/lib/active_record/migration.rb:817:in `exec_migration' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activerecord-5.2.3/lib/active_record/connection_adapters/abstract/transaction.rb:236:in `within_new_transaction' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activerecord-5.2.3/lib/active_record/migration.rb:1262:in `migrate_without_lock' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `block in require' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:257:in `load_dependency' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/activesupport-5.2.3/lib/active_support/dependencies.rb:291:in `require' /home/ec2-user/environment/taskapp/bin/rails:9:in `<top (required)>' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `load' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/spring-2.0.2/lib/spring/client/rails.rb:28:in `call' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/spring-2.0.2/lib/spring/client/command.rb:7:in `call' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/spring-2.0.2/lib/spring/client.rb:30:in `run' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/spring-2.0.2/bin/spring:49:in `<top (required)>' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `load' /home/ec2-user/.rvm/gems/ruby-2.6.0/gems/spring-2.0.2/lib/spring/binstub.rb:31:in `<top (required)>' /home/ec2-user/environment/taskapp/bin/spring:15:in `require' /home/ec2-user/environment/taskapp/bin/spring:15:in `<top (required)>' bin/rails:3:in `load' bin/rails:3:in `<main>' Tasks: TOP => db:migrate (See full trace by running task with --trace)
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退会済みユーザー
2019/04/23 23:07