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<Ruby on Rails エラー編> PostgreSQLに接続できなかった時の対処法

エラー詳細

create db:createを実行しようとするとエラーが出た。

could not connect to server: No such file or directory
        Is the server running locally and accepting
        connections on Unix domain socket "/tmp/.s.PGSQL.5432"?
Couldn't create 'アプリ名_development' database. Please check your configuration.
rails aborted!
ActiveRecord::ConnectionNotEstablished: could not connect to server: No such file or directory
        Is the server running locally and accepting
        connections on Unix domain socket "/tmp/.s.PGSQL.5432"?
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/postgresql_adapter.rb:83:in `rescue in new_client'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/postgresql_adapter.rb:77:in `new_client'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/postgresql_adapter.rb:37:in `postgresql_connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:882:in `public_send'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:882:in `new_connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:926:in `checkout_new_connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:905:in `try_to_checkout_new_connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:866:in `acquire_connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:588:in `checkout'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:428:in `connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:1128:in `retrieve_connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_handling.rb:327:in `retrieve_connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_handling.rb:283:in `connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/postgresql_database_tasks.rb:12:in `connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/postgresql_database_tasks.rb:26:in `create'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/database_tasks.rb:133:in `create'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/database_tasks.rb:193:in `block in create_current'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/database_tasks.rb:506:in `block (2 levels) in each_current_configuration'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/database_tasks.rb:503:in `each'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/database_tasks.rb:503:in `block in each_current_configuration'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/database_tasks.rb:502:in `each'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/database_tasks.rb:502:in `each_current_configuration'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/database_tasks.rb:193:in `create_current'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/railties/databases.rake:45:in `block (2 levels) in <main>'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:281:in `block in execute'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:281:in `each'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:281:in `execute'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:219:in `block in invoke_with_call_chain'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:199:in `invoke_with_call_chain'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:188:in `invoke'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:160:in `invoke_task'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:116:in `block (2 levels) in top_level'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:116:in `each'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:116:in `block in top_level'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:125:in `run_with_threads'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:110:in `top_level'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/commands/rake/rake_command.rb:24:in `block (2 levels) in perform'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:186:in `standard_exception_handling'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/commands/rake/rake_command.rb:24:in `block in perform'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/rake_module.rb:59:in `with_application'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/commands/rake/rake_command.rb:18:in `perform'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/command.rb:52:in `invoke'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/commands.rb:18:in `<main>'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
/Users/user_name/workspace/runteq/PF/アプリ名/bin/rails:5:in `<top (required)>'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/spring-2.1.1/lib/spring/client/rails.rb:28:in `load'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/spring-2.1.1/lib/spring/client/rails.rb:28:in `call'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/spring-2.1.1/lib/spring/client/command.rb:7:in `call'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/spring-2.1.1/lib/spring/client.rb:30:in `run'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/spring-2.1.1/bin/spring:49:in `<top (required)>'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/spring-2.1.1/lib/spring/binstub.rb:11:in `load'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/spring-2.1.1/lib/spring/binstub.rb:11:in `<top (required)>'
/Users/user_name/workspace/runteq/PF/アプリ名/bin/spring:10:in `block in <top (required)>'
/Users/user_name/workspace/runteq/PF/アプリ名/bin/spring:7:in `tap'
/Users/user_name/workspace/runteq/PF/アプリ名/bin/spring:7:in `<top (required)>'

Caused by:
PG::ConnectionBad: could not connect to server: No such file or directory
        Is the server running locally and accepting
        connections on Unix domain socket "/tmp/.s.PGSQL.5432"?
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/pg-1.2.3/lib/pg.rb:58:in `initialize'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/pg-1.2.3/lib/pg.rb:58:in `new'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/pg-1.2.3/lib/pg.rb:58:in `connect'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/postgresql_adapter.rb:78:in `new_client'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/postgresql_adapter.rb:37:in `postgresql_connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:882:in `public_send'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:882:in `new_connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:926:in `checkout_new_connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:905:in `try_to_checkout_new_connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:866:in `acquire_connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:588:in `checkout'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:428:in `connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_adapters/abstract/connection_pool.rb:1128:in `retrieve_connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_handling.rb:327:in `retrieve_connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/connection_handling.rb:283:in `connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/postgresql_database_tasks.rb:12:in `connection'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/postgresql_database_tasks.rb:26:in `create'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/database_tasks.rb:133:in `create'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/database_tasks.rb:193:in `block in create_current'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/database_tasks.rb:506:in `block (2 levels) in each_current_configuration'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/database_tasks.rb:503:in `each'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/database_tasks.rb:503:in `block in each_current_configuration'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/database_tasks.rb:502:in `each'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/database_tasks.rb:502:in `each_current_configuration'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/tasks/database_tasks.rb:193:in `create_current'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/activerecord-6.1.3.2/lib/active_record/railties/databases.rake:45:in `block (2 levels) in <main>'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:281:in `block in execute'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:281:in `each'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:281:in `execute'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:219:in `block in invoke_with_call_chain'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:199:in `invoke_with_call_chain'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/task.rb:188:in `invoke'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:160:in `invoke_task'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:116:in `block (2 levels) in top_level'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:116:in `each'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:116:in `block in top_level'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:125:in `run_with_threads'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:110:in `top_level'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/commands/rake/rake_command.rb:24:in `block (2 levels) in perform'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/application.rb:186:in `standard_exception_handling'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/commands/rake/rake_command.rb:24:in `block in perform'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/rake-13.0.3/lib/rake/rake_module.rb:59:in `with_application'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/commands/rake/rake_command.rb:18:in `perform'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/command.rb:52:in `invoke'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/railties-6.1.3.2/lib/rails/commands.rb:18:in `<main>'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
/Users/user_name/workspace/runteq/PF/アプリ名/bin/rails:5:in `<top (required)>'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/spring-2.1.1/lib/spring/client/rails.rb:28:in `load'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/spring-2.1.1/lib/spring/client/rails.rb:28:in `call'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/spring-2.1.1/lib/spring/client/command.rb:7:in `call'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/spring-2.1.1/lib/spring/client.rb:30:in `run'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/spring-2.1.1/bin/spring:49:in `<top (required)>'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/spring-2.1.1/lib/spring/binstub.rb:11:in `load'
/Users/user_name/workspace/runteq/PF/アプリ名/vendor/bundle/ruby/2.6.0/gems/spring-2.1.1/lib/spring/binstub.rb:11:in `<top (required)>'
/Users/user_name/workspace/runteq/PF/アプリ名/bin/spring:10:in `block in <top (required)>'
/Users/user_name/workspace/runteq/PF/アプリ名/bin/spring:7:in `tap'
/Users/user_name/workspace/runteq/PF/アプリ名/bin/spring:7:in `<top (required)>'
Tasks: TOP => db:create
(See full trace by running task with --trace)

やったこと

まず、postgreSQLが動作しているかを確認する。

$ brew services list
mysql@5.7  stopped        
postgresql error   user_name /Users/user_name/Library/LaunchAgents/homebrew.mxcl.postgresql.plist

エラーが発生していて、起動できていないことが確認できた。
一応upgradeを一度して、改めてパスを通した。

$ brew upgrade postgresql

$ echo 'export PATH="/usr/local/opt/icu4c/bin:$PATH"' >> ~/.zshrc
$ source ~/.zshrc 

upgradeした時にpostgresqlの起動方法が表示されているので、

To have launchd start postgresql now and restart at login: 
  brew services start postgresql
Or, if you don't want/need a background service you can just run:
  pg_ctl -D /usr/local/var/postgres start

のうち、

$ pg_ctl -D /usr/local/var/postgres start 

起動を実行した。

waiting for server to start....2021-05-13 00:13:14.089 JST [24927] LOG:  starting PostgreSQL 13.2 on x86_64-apple-darwin20.3.0, compiled by Apple clang version 12.0.0 (clang-1200.0.32.29), 64-bit
2021-05-13 00:13:14.091 JST [24927] LOG:  listening on IPv4 address "127.0.0.1", port 5432
2021-05-13 00:13:14.091 JST [24927] LOG:  listening on IPv6 address "::1", port 5432
2021-05-13 00:13:14.107 JST [24927] FATAL:  could not create lock file "/tmp/.s.PGSQL.5432.lock": Permission denied
2021-05-13 00:13:14.109 JST [24927] LOG:  database system is shut down
 stopped waiting
pg_ctl: could not start server
Examine the log output.

すると上記のような表示が出力され、tmpディレクトリにpermission deniedが発生していることがわかった。
そのため、以下のコマンドで許可を与えた。

$ sudo chmod 1777 /tmp 

そしてもう一度

$ pg_ctl -D /usr/local/var/postgres start 

を実行した。
すると以下のような表示が出た。

pg_ctl: another server might be running; trying to start server anyway
waiting for server to start....2021-05-13 00:17:46.861 JST [25470] FATAL:  lock file "postmaster.pid" already exists
2021-05-13 00:17:46.861 JST [25470] HINT:  Is another postmaster (PID 25460) running in data directory "/usr/local/var/postgres"?
 stopped waiting
pg_ctl: could not start server
Examine the log output.

今度はlock file "postmaster.pid" already existsという表示が出たのでrmした。

$ rm /usr/local/var/postgres/postmaster.pid 

brew services listで動作確認をまた行うと、

Name       Status  User   Plist
mysql@5.7  stopped        
postgresql started user_name /Users/user_name/Library/LaunchAgents/homebrew.mxcl.postgresql.plist

で動作確認ができ、rails db:createも実行できるようになった。

参考文献

Postgresqlに接続できなくなった時の対処法 - Qiita