Successful build but process exited with status 1, deploying rails app on heroku

Question

I have been getting the following errors after the build has been successful. Any ideas on how to fix this error?

2019-02-24T23:51:17.000000+00:00 app[api]: Build started by user [email protected]
2019-02-24T23:51:41.818679+00:00 app[api]: Release v16 created by user [email protected]
2019-02-24T23:51:41.818679+00:00 app[api]: Deploy 2096254f by user [email protected]
2019-02-24T23:51:42.540367+00:00 heroku[web.1]: State changed from crashed to starting
2019-02-24T23:51:44.000000+00:00 app[api]: Build succeeded
2019-02-24T23:51:48.259082+00:00 heroku[web.1]: Starting process with command bin/rails server -p 23822 -e production
2019-02-24T23:51:53.313462+00:00 heroku[web.1]: State changed from starting to crashed
2019-02-24T23:51:53.221432+00:00 app[web.1]: /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/active_support.rb:76:in block in load_missing_constant: uninitialized constant Knock (NameError)
2019-02-24T23:51:53.221452+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/active_support.rb:8:in without_bootsnap_cache
2019-02-24T23:51:53.221697+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/active_support.rb:76:in rescue in load_missing_constant
2019-02-24T23:51:53.221700+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/active_support.rb:58:in load_missing_constant
2019-02-24T23:51:53.221702+00:00 app[web.1]: from /app/app/controllers/user_token_controller.rb:1:in <main>
2019-02-24T23:51:53.221704+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in require
2019-02-24T23:51:53.221706+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in block in require_with_bootsnap_lfi
2019-02-24T23:51:53.221842+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:83:in register
2019-02-24T23:51:53.221844+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in require_with_bootsnap_lfi
2019-02-24T23:51:53.221846+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in require
2019-02-24T23:51:53.221848+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies/interlock.rb:14:in block in loading
2019-02-24T23:51:53.221850+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/concurrency/share_lock.rb:151:in exclusive
2019-02-24T23:51:53.221858+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/activesupport-5.2.2/lib/active_support/dependencies/interlock.rb:13:in loading
2019-02-24T23:51:53.221860+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/active_support.rb:48:in block in require_or_load
2019-02-24T23:51:53.221862+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/active_support.rb:16:in allow_bootsnap_retry
2019-02-24T23:51:53.221863+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/active_support.rb:47:in require_or_load
2019-02-24T23:51:53.221865+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/active_support.rb:82:in depend_on
2019-02-24T23:51:53.221866+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/engine.rb:478:in block (2 levels) in eager_load!
2019-02-24T23:51:53.221868+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/engine.rb:477:in each
2019-02-24T23:51:53.221870+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/engine.rb:477:in block in eager_load!
2019-02-24T23:51:53.221923+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/engine.rb:475:in each
2019-02-24T23:51:53.221926+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/engine.rb:475:in eager_load!
2019-02-24T23:51:53.221927+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/engine.rb:356:in eager_load!
2019-02-24T23:51:53.221929+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/application/finisher.rb:69:in each
2019-02-24T23:51:53.221930+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/application/finisher.rb:69:in block in <module:Finisher>
2019-02-24T23:51:53.221932+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/initializable.rb:32:in instance_exec
2019-02-24T23:51:53.221933+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/initializable.rb:32:in run
2019-02-24T23:51:53.221935+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/initializable.rb:61:in block in run_initializers
2019-02-24T23:51:53.221936+00:00 app[web.1]: from /app/vendor/ruby-2.5.1/lib/ruby/2.5.0/tsort.rb:228:in block in tsort_each
2019-02-24T23:51:53.221938+00:00 app[web.1]: from /app/vendor/ruby-2.5.1/lib/ruby/2.5.0/tsort.rb:350:in block (2 levels) in each_strongly_connected_component
2019-02-24T23:51:53.221939+00:00 app[web.1]: from /app/vendor/ruby-2.5.1/lib/ruby/2.5.0/tsort.rb:431:in each_strongly_connected_component_from
2019-02-24T23:51:53.221941+00:00 app[web.1]: from /app/vendor/ruby-2.5.1/lib/ruby/2.5.0/tsort.rb:349:in block in each_strongly_connected_component
2019-02-24T23:51:53.221943+00:00 app[web.1]: from /app/vendor/ruby-2.5.1/lib/ruby/2.5.0/tsort.rb:347:in each
2019-02-24T23:51:53.221944+00:00 app[web.1]: from /app/vendor/ruby-2.5.1/lib/ruby/2.5.0/tsort.rb:347:in call
2019-02-24T23:51:53.221950+00:00 app[web.1]: from /app/vendor/ruby-2.5.1/lib/ruby/2.5.0/tsort.rb:347:in each_strongly_connected_component
2019-02-24T23:51:53.221952+00:00 app[web.1]: from /app/vendor/ruby-2.5.1/lib/ruby/2.5.0/tsort.rb:226:in tsort_each
2019-02-24T23:51:53.221954+00:00 app[web.1]: from /app/vendor/ruby-2.5.1/lib/ruby/2.5.0/tsort.rb:205:in tsort_each
2019-02-24T23:51:53.221955+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/initializable.rb:60:in run_initializers
2019-02-24T23:51:53.221957+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/application.rb:361:in initialize!
2019-02-24T23:51:53.221959+00:00 app[web.1]: from /app/config/environment.rb:5:in <main>
2019-02-24T23:51:53.221960+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in require
2019-02-24T23:51:53.221963+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in block in require_with_bootsnap_lfi
2019-02-24T23:51:53.221965+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:83:in register
2019-02-24T23:51:53.221966+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in require_with_bootsnap_lfi
2019-02-24T23:51:53.221974+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in require
2019-02-24T23:51:53.221975+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:44:in require_relative
2019-02-24T23:51:53.221977+00:00 app[web.1]: from config.ru:3:in block in <main>
2019-02-24T23:51:53.221979+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/builder.rb:55:in instance_eval
2019-02-24T23:51:53.221981+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/builder.rb:55:in initialize
2019-02-24T23:51:53.221983+00:00 app[web.1]: from config.ru:in new
2019-02-24T23:51:53.221984+00:00 app[web.1]: from config.ru:in <main>
2019-02-24T23:51:53.221986+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/builder.rb:49:in eval
2019-02-24T23:51:53.221988+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/builder.rb:49:in new_from_string
2019-02-24T23:51:53.221989+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/builder.rb:40:in parse_file
2019-02-24T23:51:53.221991+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/server.rb:319:in build_app_and_options_from_config
2019-02-24T23:51:53.221993+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/server.rb:219:in app
2019-02-24T23:51:53.221994+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/commands/server/server_command.rb:27:in app
2019-02-24T23:51:53.221996+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/server.rb:354:in wrapped_app
2019-02-24T23:51:53.221997+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/rack-2.0.6/lib/rack/server.rb:283:in start
2019-02-24T23:51:53.221999+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/commands/server/server_command.rb:53:in start
2019-02-24T23:51:53.222001+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/commands/server/server_command.rb:147:in block in perform
2019-02-24T23:51:53.222002+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/commands/server/server_command.rb:142:in tap
2019-02-24T23:51:53.222004+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/commands/server/server_command.rb:142:in perform
2019-02-24T23:51:53.222005+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/thor-0.20.3/lib/thor/command.rb:27:in run
2019-02-24T23:51:53.222007+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/thor-0.20.3/lib/thor/invocation.rb:126:in invoke_command
2019-02-24T23:51:53.222009+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/thor-0.20.3/lib/thor.rb:387:in dispatch
2019-02-24T23:51:53.222010+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/command/base.rb:65:in perform
2019-02-24T23:51:53.222012+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/command.rb:46:in invoke
2019-02-24T23:51:53.222014+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/railties-5.2.2/lib/rails/commands.rb:18:in <main>
2019-02-24T23:51:53.222015+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in require
2019-02-24T23:51:53.222017+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in block in require_with_bootsnap_lfi
2019-02-24T23:51:53.222018+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/loaded_features_index.rb:83:in register
2019-02-24T23:51:53.222020+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:20:in require_with_bootsnap_lfi
2019-02-24T23:51:53.222022+00:00 app[web.1]: from /app/vendor/bundle/ruby/2.5.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:29:in require
2019-02-24T23:51:53.222023+00:00 app[web.1]: from bin/rails:9:in <main>
2019-02-24T23:51:53.223670+00:00 app[web.1]: => Booting Puma
2019-02-24T23:51:53.223672+00:00 app[web.1]: => Rails 5.2.2 application starting in production

2019-02-24T23:51:53.223673+00:00 app[web.1]: => Run rails server -h for more startup options
2019-02-24T23:51:53.223675+00:00 app[web.1]: Exiting 2019-02-24T23:51:53.294763+00:00 heroku[web.1]: Process exited with status 1

Answer 1

I found the error. The authentication method I was causing the crash. After fixing this the website ran perfectly.