title: No such file or directory @ rb_sysopen - webpacker.yml running `rails s`
body: <p>If I make a folder with  <code>rails new myproject</code>
  then go in the folder and type <code>rails s</code>, I get this error:</p>
  <pre><code>Warning: the running version of Bundler (2.1.2) is older than the version that created the lockfile (2.1.4). We suggest you to upgrade to the version that created the lockfile by running `gem install bundler:2.1.4`.
  =&gt; Booting Puma
  =&gt; Rails 6.0.3.2 application starting in development 
  =&gt; Run `rails server --help` for more startup options
  Exiting
  Traceback (most recent call last):
      77: from bin/rails:3:in `&lt;main&gt;'
      76: from bin/rails:3:in `load'
      75: from /home/arian/projects/Arian-p1/bin/spring:15:in `&lt;top (required)&gt;'
      74: from /usr/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:72:in `require'
      73: from /usr/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:72:in `require'
      72: from /var/lib/gems/2.7.0/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `&lt;top (required)&gt;'
      71: from /var/lib/gems/2.7.0/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `load'
      70: from /var/lib/gems/2.7.0/gems/spring-2.1.0/bin/spring:49:in `&lt;top (required)&gt;'
      69: from /var/lib/gems/2.7.0/gems/spring-2.1.0/lib/spring/client.rb:30:in `run'
      68: from /var/lib/gems/2.7.0/gems/spring-2.1.0/lib/spring/client/command.rb:7:in `call'
      67: from /var/lib/gems/2.7.0/gems/spring-2.1.0/lib/spring/client/rails.rb:28:in `call'
      66: from /var/lib/gems/2.7.0/gems/spring-2.1.0/lib/spring/client/rails.rb:28:in `load'
      65: from /home/arian/projects/Arian-p1/bin/rails:9:in `&lt;top (required)&gt;'
      64: from /var/lib/gems/2.7.0/gems/activesupport-6.0.3.2/lib/active_support/dependencies.rb:324:in `require'
      63: from /var/lib/gems/2.7.0/gems/activesupport-6.0.3.2/lib/active_support/dependencies.rb:291:in `load_dependency'
      62: from /var/lib/gems/2.7.0/gems/activesupport-6.0.3.2/lib/active_support/dependencies.rb:324:in `block in require'
      61: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
      60: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
      59: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
      58: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
      57: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
      56: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/commands.rb:18:in `&lt;main&gt;'
      55: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/command.rb:46:in `invoke'
      54: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/command/base.rb:69:in `perform'
      53: from /var/lib/gems/2.7.0/gems/thor-1.0.1/lib/thor.rb:392:in `dispatch'
      52: from /var/lib/gems/2.7.0/gems/thor-1.0.1/lib/thor/invocation.rb:127:in `invoke_command'
      51: from /var/lib/gems/2.7.0/gems/thor-1.0.1/lib/thor/command.rb:27:in `run'
      50: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/commands/server/server_command.rb:138:in `perform'
      49: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/commands/server/server_command.rb:138:in `tap'
      48: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/commands/server/server_command.rb:147:in `block in perform'
      47: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/commands/server/server_command.rb:37:in `start'
      46: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/commands/server/server_command.rb:77:in `log_to_stdout'
      45: from /var/lib/gems/2.7.0/gems/rack-2.2.3/lib/rack/server.rb:422:in `wrapped_app'
      44: from /var/lib/gems/2.7.0/gems/rack-2.2.3/lib/rack/server.rb:249:in `app'
      43: from /var/lib/gems/2.7.0/gems/rack-2.2.3/lib/rack/server.rb:349:in `build_app_and_options_from_config'
      42: from /var/lib/gems/2.7.0/gems/rack-2.2.3/lib/rack/builder.rb:66:in `parse_file'
      41: from /var/lib/gems/2.7.0/gems/rack-2.2.3/lib/rack/builder.rb:105:in `load_file'
      40: from /var/lib/gems/2.7.0/gems/rack-2.2.3/lib/rack/builder.rb:116:in `new_from_string'
      39: from /var/lib/gems/2.7.0/gems/rack-2.2.3/lib/rack/builder.rb:116:in `eval'
      38: from config.ru:3:in `block in &lt;main&gt;'
      37: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:49:in `require_relative'
      36: from /var/lib/gems/2.7.0/gems/activesupport-6.0.3.2/lib/active_support/dependencies.rb:324:in `require'
      35: from /var/lib/gems/2.7.0/gems/activesupport-6.0.3.2/lib/active_support/dependencies.rb:291:in `load_dependency'
      34: from /var/lib/gems/2.7.0/gems/activesupport-6.0.3.2/lib/active_support/dependencies.rb:324:in `block in require'
      33: from /var/lib/gems/2.7.0/gems/zeitwerk-2.4.0/lib/zeitwerk/kernel.rb:34:in `require'
      32: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
      31: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
      30: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
      29: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
      28: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
      27: from /home/arian/projects/Arian-p1/config/environment.rb:5:in `&lt;main&gt;'
      26: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/application.rb:363:in `initialize!'
      25: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/initializable.rb:60:in `run_initializers'
      24: from /usr/lib/ruby/2.7.0/tsort.rb:205:in `tsort_each'
      23: from /usr/lib/ruby/2.7.0/tsort.rb:226:in `tsort_each'
      22: from /usr/lib/ruby/2.7.0/tsort.rb:347:in `each_strongly_connected_component'
      21: from /usr/lib/ruby/2.7.0/tsort.rb:347:in `call'
      20: from /usr/lib/ruby/2.7.0/tsort.rb:347:in `each'
      19: from /usr/lib/ruby/2.7.0/tsort.rb:349:in `block in each_strongly_connected_component'
      18: from /usr/lib/ruby/2.7.0/tsort.rb:431:in `each_strongly_connected_component_from'
      17: from /usr/lib/ruby/2.7.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
      16: from /usr/lib/ruby/2.7.0/tsort.rb:228:in `block in tsort_each'
      15: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/initializable.rb:61:in `block in run_initializers'
      14: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/initializable.rb:32:in `run'
      13: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/initializable.rb:32:in `instance_exec'
      12: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/railtie.rb:84:in `block in &lt;class:Engine&gt;'
      11: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker.rb:35:in `bootstrap'
      10: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/commands.rb:25:in `bootstrap'
       9: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/manifest.rb:18:in `refresh'
       8: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/manifest.rb:83:in `load'
       7: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/configuration.rb:51:in `public_manifest_path'
       6: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/configuration.rb:47:in `public_output_path'
       5: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/configuration.rb:43:in `public_path'
       4: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/configuration.rb:84:in `fetch'
       3: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/configuration.rb:88:in `data'
       2: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/configuration.rb:92:in `load'
       1: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/configuration.rb:92:in `read'
  /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/configuration.rb:92:in `read': No such file or directory @ rb_sysopen - /home/arian/projects/Arian-p1/config/webpacker.yml (Errno::ENOENT)
      76: from bin/rails:3:in `&lt;main&gt;'
      75: from bin/rails:3:in `load'
      74: from /home/arian/projects/Arian-p1/bin/spring:15:in `&lt;top (required)&gt;'
      73: from /usr/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:72:in `require'
      72: from /usr/lib/ruby/2.7.0/rubygems/core_ext/kernel_require.rb:72:in `require'
      71: from /var/lib/gems/2.7.0/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `&lt;top (required)&gt;'
      70: from /var/lib/gems/2.7.0/gems/spring-2.1.0/lib/spring/binstub.rb:11:in `load'
      69: from /var/lib/gems/2.7.0/gems/spring-2.1.0/bin/spring:49:in `&lt;top (required)&gt;'
      68: from /var/lib/gems/2.7.0/gems/spring-2.1.0/lib/spring/client.rb:30:in `run'
      67: from /var/lib/gems/2.7.0/gems/spring-2.1.0/lib/spring/client/command.rb:7:in `call'
      66: from /var/lib/gems/2.7.0/gems/spring-2.1.0/lib/spring/client/rails.rb:28:in `call'
      65: from /var/lib/gems/2.7.0/gems/spring-2.1.0/lib/spring/client/rails.rb:28:in `load'
      64: from /home/arian/projects/Arian-p1/bin/rails:9:in `&lt;top (required)&gt;'
      63: from /var/lib/gems/2.7.0/gems/activesupport-6.0.3.2/lib/active_support/dependencies.rb:324:in `require'
      62: from /var/lib/gems/2.7.0/gems/activesupport-6.0.3.2/lib/active_support/dependencies.rb:291:in `load_dependency'
      61: from /var/lib/gems/2.7.0/gems/activesupport-6.0.3.2/lib/active_support/dependencies.rb:324:in `block in require'
      60: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
      59: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
      58: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
      57: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
      56: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
      55: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/commands.rb:18:in `&lt;main&gt;'
      54: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/command.rb:46:in `invoke'
      53: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/command/base.rb:69:in `perform'
      52: from /var/lib/gems/2.7.0/gems/thor-1.0.1/lib/thor.rb:392:in `dispatch'
      51: from /var/lib/gems/2.7.0/gems/thor-1.0.1/lib/thor/invocation.rb:127:in `invoke_command'
      50: from /var/lib/gems/2.7.0/gems/thor-1.0.1/lib/thor/command.rb:27:in `run'
      49: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/commands/server/server_command.rb:138:in `perform'
      48: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/commands/server/server_command.rb:138:in `tap'
      47: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/commands/server/server_command.rb:147:in `block in perform'
      46: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/commands/server/server_command.rb:37:in `start'
      45: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/commands/server/server_command.rb:77:in `log_to_stdout'
      44: from /var/lib/gems/2.7.0/gems/rack-2.2.3/lib/rack/server.rb:422:in `wrapped_app'
      43: from /var/lib/gems/2.7.0/gems/rack-2.2.3/lib/rack/server.rb:249:in `app'
      42: from /var/lib/gems/2.7.0/gems/rack-2.2.3/lib/rack/server.rb:349:in `build_app_and_options_from_config'
      41: from /var/lib/gems/2.7.0/gems/rack-2.2.3/lib/rack/builder.rb:66:in `parse_file'
      40: from /var/lib/gems/2.7.0/gems/rack-2.2.3/lib/rack/builder.rb:105:in `load_file'
      39: from /var/lib/gems/2.7.0/gems/rack-2.2.3/lib/rack/builder.rb:116:in `new_from_string'
      38: from /var/lib/gems/2.7.0/gems/rack-2.2.3/lib/rack/builder.rb:116:in `eval'
      37: from config.ru:3:in `block in &lt;main&gt;'
      36: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:49:in `require_relative'
      35: from /var/lib/gems/2.7.0/gems/activesupport-6.0.3.2/lib/active_support/dependencies.rb:324:in `require'
      34: from /var/lib/gems/2.7.0/gems/activesupport-6.0.3.2/lib/active_support/dependencies.rb:291:in `load_dependency'
      33: from /var/lib/gems/2.7.0/gems/activesupport-6.0.3.2/lib/active_support/dependencies.rb:324:in `block in require'
      32: from /var/lib/gems/2.7.0/gems/zeitwerk-2.4.0/lib/zeitwerk/kernel.rb:34:in `require'
      31: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
      30: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
      29: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
      28: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
      27: from /var/lib/gems/2.7.0/gems/bootsnap-1.4.7/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
      26: from /home/arian/projects/Arian-p1/config/environment.rb:5:in `&lt;main&gt;'
      25: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/application.rb:363:in `initialize!'
      24: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/initializable.rb:60:in `run_initializers'
      23: from /usr/lib/ruby/2.7.0/tsort.rb:205:in `tsort_each'
      22: from /usr/lib/ruby/2.7.0/tsort.rb:226:in `tsort_each'
      21: from /usr/lib/ruby/2.7.0/tsort.rb:347:in `each_strongly_connected_component'
      20: from /usr/lib/ruby/2.7.0/tsort.rb:347:in `call'
      19: from /usr/lib/ruby/2.7.0/tsort.rb:347:in `each'
      18: from /usr/lib/ruby/2.7.0/tsort.rb:349:in `block in each_strongly_connected_component'
      17: from /usr/lib/ruby/2.7.0/tsort.rb:431:in `each_strongly_connected_component_from'
      16: from /usr/lib/ruby/2.7.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
      15: from /usr/lib/ruby/2.7.0/tsort.rb:228:in `block in tsort_each'
      14: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/initializable.rb:61:in `block in run_initializers'
      13: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/initializable.rb:32:in `run'
      12: from /var/lib/gems/2.7.0/gems/railties-6.0.3.2/lib/rails/initializable.rb:32:in `instance_exec'
      11: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/railtie.rb:84:in `block in &lt;class:Engine&gt;'
      10: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker.rb:35:in `bootstrap'
       9: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/commands.rb:25:in `bootstrap'
       8: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/manifest.rb:18:in `refresh'
       7: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/manifest.rb:83:in `load'
       6: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/configuration.rb:51:in `public_manifest_path'
       5: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/configuration.rb:47:in `public_output_path'
       4: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/configuration.rb:43:in `public_path'
       3: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/configuration.rb:84:in `fetch'
       2: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/configuration.rb:88:in `data'
       1: from /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/configuration.rb:91:in `load'
  /var/lib/gems/2.7.0/gems/webpacker-4.2.2/lib/webpacker/configuration.rb:95:in `rescue in load': Webpacker configuration file not found /home/arian/projects/Arian-p1/config/webpacker.yml. Please run rails webpacker:install Error: No such file or directory @ rb_sysopen - /home/arian/projects/Arian-p1/config/webpacker.yml (RuntimeError)
  </code></pre>
  <p>I installed bundler 2.1.4
  I am running on Ubuntu.</p>