[英]Rails server exits automatically. This is what i see below:
Macs-MBP:myapp mac$ rails server
=> Booting Puma
=> Rails 6.0.1 application starting in development
=> Run `rails server --help` for more startup options
Exiting
Traceback (most recent call last):
80: from bin/rails:3:in `<main>'
79: from bin/rails:3:in `load'
78: from /Users/mac/myapp/bin/spring:15:in `<top (required)>'
77: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/site_ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
76: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/site_ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
75: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `<top (required)>'
74: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `load'
73: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/spring-2.1.0/bin/spring:49:in `<top (required)>'
72: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/spring-2.1.0/lib/spring/client.rb:30:in `run'
71: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/spring-2.1.0/lib/spring/client/command.rb:7:in `call'
70: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/spring-2.1.0/lib/spring/client/rails.rb:28:in `call'
69: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/spring-2.1.0/lib/spring/client/rails.rb:28:in `load'
68: from /Users/mac/myapp/bin/rails:9:in `<top (required)>'
67: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/activesupport-6.0.1/lib/active_support/dependencies.rb:325:in `require'
66: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/activesupport-6.0.1/lib/active_support/dependencies.rb:291:in `load_dependency'
65: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/activesupport-6.0.1/lib/active_support/dependencies.rb:325:in `block in require'
64: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
63: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
62: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
61: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
60: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
59: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/commands.rb:18:in `<main>'
58: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/command.rb:46:in `invoke'
57: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/command/base.rb:65:in `perform'
56: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/thor-0.20.3/lib/thor.rb:387:in `dispatch'
55: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/thor-0.20.3/lib/thor/invocation.rb:126:in `invoke_command'
54: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/thor-0.20.3/lib/thor/command.rb:27:in `run'
53: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/commands/server/server_command.rb:138:in `perform'
52: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/commands/server/server_command.rb:138:in `tap'
51: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/commands/server/server_command.rb:147:in `block in perform'
50: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/commands/server/server_command.rb:37:in `start'
49: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/commands/server/server_command.rb:77:in `log_to_stdout'
48: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/rack-2.0.7/lib/rack/server.rb:354:in `wrapped_app'
47: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/rack-2.0.7/lib/rack/server.rb:219:in `app'
46: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/rack-2.0.7/lib/rack/server.rb:319:in `build_app_and_options_from_config'
45: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/rack-2.0.7/lib/rack/builder.rb:40:in `parse_file'
44: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/rack-2.0.7/lib/rack/builder.rb:49:in `new_from_string'
43: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/rack-2.0.7/lib/rack/builder.rb:49:in `eval'
42: from config.ru:in `<main>'
41: from config.ru:in `new'
40: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/rack-2.0.7/lib/rack/builder.rb:55:in `initialize'
39: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/rack-2.0.7/lib/rack/builder.rb:55:in `instance_eval'
38: from config.ru:3:in `block in <main>'
37: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:48:in `require_relative'
36: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/activesupport-6.0.1/lib/active_support/dependencies.rb:325:in `require'
35: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/activesupport-6.0.1/lib/active_support/dependencies.rb:291:in `load_dependency'
34: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/activesupport-6.0.1/lib/active_support/dependencies.rb:325:in `block in require'
33: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/zeitwerk-2.2.1/lib/zeitwerk/kernel.rb:23:in `require'
32: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
31: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
30: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
29: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
28: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
27: from /Users/mac/myapp/config/environment.rb:5:in `<main>'
26: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/application.rb:363:in `initialize!'
25: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/initializable.rb:60:in `run_initializers'
24: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/2.6.0/tsort.rb:205:in `tsort_each'
23: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/2.6.0/tsort.rb:226:in `tsort_each'
22: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/2.6.0/tsort.rb:347:in `each_strongly_connected_component'
21: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/2.6.0/tsort.rb:347:in `call'
20: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/2.6.0/tsort.rb:347:in `each'
19: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/2.6.0/tsort.rb:349:in `block in each_strongly_connected_component'
18: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/2.6.0/tsort.rb:431:in `each_strongly_connected_component_from'
17: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/2.6.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
16: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/2.6.0/tsort.rb:228:in `block in tsort_each'
15: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/initializable.rb:61:in `block in run_initializers'
14: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/initializable.rb:32:in `run'
13: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/initializable.rb:32:in `instance_exec'
12: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/railtie.rb:84:in `block in <class:Engine>'
11: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker.rb:27:in `bootstrap'
10: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/commands.rb:31:in `bootstrap'
9: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/manifest.rb:18:in `refresh'
8: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/manifest.rb:83:in `load'
7: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/configuration.rb:51:in `public_manifest_path'
6: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/configuration.rb:47:in `public_output_path'
5: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/configuration.rb:43:in `public_path'
4: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/configuration.rb:84:in `fetch'
3: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/configuration.rb:88:in `data'
2: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/configuration.rb:92:in `load'
1: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/configuration.rb:92:in `read'
/Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/configuration.rb:92:in `read': No such file or directory @ rb_sysopen - /Users/mac/myapp/config/webpacker.yml (Errno::ENOENT)
79: from bin/rails:3:in `<main>'
78: from bin/rails:3:in `load'
77: from /Users/mac/myapp/bin/spring:15:in `<top (required)>'
76: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/site_ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
75: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/site_ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
74: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `<top (required)>'
73: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `load'
72: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/spring-2.1.0/bin/spring:49:in `<top (required)>'
71: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/spring-2.1.0/lib/spring/client.rb:30:in `run'
70: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/spring-2.1.0/lib/spring/client/command.rb:7:in `call'
69: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/spring-2.1.0/lib/spring/client/rails.rb:28:in `call'
68: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/spring-2.1.0/lib/spring/client/rails.rb:28:in `load'
67: from /Users/mac/myapp/bin/rails:9:in `<top (required)>'
66: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/activesupport-6.0.1/lib/active_support/dependencies.rb:325:in `require'
65: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/activesupport-6.0.1/lib/active_support/dependencies.rb:291:in `load_dependency'
64: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/activesupport-6.0.1/lib/active_support/dependencies.rb:325:in `block in require'
63: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
62: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
61: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
60: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
59: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
58: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/commands.rb:18:in `<main>'
57: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/command.rb:46:in `invoke'
56: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/command/base.rb:65:in `perform'
55: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/thor-0.20.3/lib/thor.rb:387:in `dispatch'
54: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/thor-0.20.3/lib/thor/invocation.rb:126:in `invoke_command'
53: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/thor-0.20.3/lib/thor/command.rb:27:in `run'
52: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/commands/server/server_command.rb:138:in `perform'
51: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/commands/server/server_command.rb:138:in `tap'
50: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/commands/server/server_command.rb:147:in `block in perform'
49: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/commands/server/server_command.rb:37:in `start'
48: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/commands/server/server_command.rb:77:in `log_to_stdout'
47: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/rack-2.0.7/lib/rack/server.rb:354:in `wrapped_app'
46: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/rack-2.0.7/lib/rack/server.rb:219:in `app'
45: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/rack-2.0.7/lib/rack/server.rb:319:in `build_app_and_options_from_config'
44: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/rack-2.0.7/lib/rack/builder.rb:40:in `parse_file'
43: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/rack-2.0.7/lib/rack/builder.rb:49:in `new_from_string'
42: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/rack-2.0.7/lib/rack/builder.rb:49:in `eval'
41: from config.ru:in `<main>'
40: from config.ru:in `new'
39: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/rack-2.0.7/lib/rack/builder.rb:55:in `initialize'
38: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/rack-2.0.7/lib/rack/builder.rb:55:in `instance_eval'
37: from config.ru:3:in `block in <main>'
36: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:48:in `require_relative'
35: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/activesupport-6.0.1/lib/active_support/dependencies.rb:325:in `require'
34: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/activesupport-6.0.1/lib/active_support/dependencies.rb:291:in `load_dependency'
33: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/activesupport-6.0.1/lib/active_support/dependencies.rb:325:in `block in require'
32: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/zeitwerk-2.2.1/lib/zeitwerk/kernel.rb:23:in `require'
31: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:30:in `require'
30: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require_with_bootsnap_lfi'
29: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
28: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `block in require_with_bootsnap_lfi'
27: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/bootsnap-1.4.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require'
26: from /Users/mac/myapp/config/environment.rb:5:in `<main>'
25: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/application.rb:363:in `initialize!'
24: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/initializable.rb:60:in `run_initializers'
23: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/2.6.0/tsort.rb:205:in `tsort_each'
22: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/2.6.0/tsort.rb:226:in `tsort_each'
21: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/2.6.0/tsort.rb:347:in `each_strongly_connected_component'
20: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/2.6.0/tsort.rb:347:in `call'
19: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/2.6.0/tsort.rb:347:in `each'
18: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/2.6.0/tsort.rb:349:in `block in each_strongly_connected_component'
17: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/2.6.0/tsort.rb:431:in `each_strongly_connected_component_from'
16: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/2.6.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
15: from /Users/mac/.rvm/rubies/ruby-2.6.0/lib/ruby/2.6.0/tsort.rb:228:in `block in tsort_each'
14: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/initializable.rb:61:in `block in run_initializers'
13: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/initializable.rb:32:in `run'
12: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/railties-6.0.1/lib/rails/initializable.rb:32:in `instance_exec'
11: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/railtie.rb:84:in `block in <class:Engine>'
10: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker.rb:27:in `bootstrap'
9: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/commands.rb:31:in `bootstrap'
8: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/manifest.rb:18:in `refresh'
7: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/manifest.rb:83:in `load'
6: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/configuration.rb:51:in `public_manifest_path'
5: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/configuration.rb:47:in `public_output_path'
4: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/configuration.rb:43:in `public_path'
3: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/configuration.rb:84:in `fetch'
2: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/configuration.rb:88:in `data'
1: from /Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/configuration.rb:91:in `load'
/Users/mac/.rvm/gems/ruby-2.6.0/gems/webpacker-4.2.0/lib/webpacker/configuration.rb:95:in `rescue in load': Webpacker configuration file not found /Users/mac/myapp/config/webpacker.yml. Please run rails webpacker:install Error: No such file or directory @ rb_sysopen - /Users/mac/myapp/config/webpacker.yml (RuntimeError)
您正在使用与 ruby 2.6.5 不兼容的 rails 4.2.3。
要运行 rails 4.2.3，您需要 ruby 2.3（然后逐步升级 rails 和 ruby）。
运行后，您可以升级到 rails 4.2.11.1（已经可以在 ruby 2.4 上运行），然后升级到 rails 5.0.7.2，这里的某处 ruby 2.4、2.5 和 2.6 等等 - 您必须升级到每个最新版本次要轨道发布，然后升级 ruby。
在每一步解决所有弃用警告，这些是下一个版本中损坏的内容
我的 Rails 服务器自动退出，现在出现以下错误：
[英]My rails server exits automatically and now gives the following error:
（Ubuntu）当我运行“ rails server”时，它会运行，但随后退出并给我很多我认为是错误消息的信息
[英](Ubuntu) When I run “rails server” it runs, but then exits and gives me a bunch of what I presume are error messages
如何在Rails中的控制器中查看show函数的功能？
[英]How can I see what the show function is doing in a controller in Rails?
Rails 调试器在一段时间后自动退出，并且 Ubuntu 终端选项卡挂起
[英]Rails debugger exits automatically after some interval, and Ubuntu terminal tab hangs
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