尝试加载 /admin/docker/repos 时出现错误代码：500 错误

[Milenski (Milen Valov)]

Discourse 出现了什么问题？当我尝试加载管理面板进行更新时，出现此错误：“在尝试加载 /admin/docker/repos 时出错 错误代码：500 错误”。

我记得当实现了一个新插件并将其安装到系统上时也发生过这种情况。但现在我没有安装任何插件，只使用了内置的插件。

我执行了：

cd /var/discourse
./launcher rebuild app

一切顺利，但在管理面板中访问更新页面时仍然出现相同的错误。

我还会将 /logs 中的回溯信息贴在这里：

NameError (未初始化的常量 Discourse::VERSION::PRE) app/controllers/application_controller.rb:440:in `block in with_resolved_locale' app/controllers/application_controller.rb:440:in `with_resol
...
plugins/docker_manager/app/controllers/docker_manager/admin_controller.rb:185:in `discourse_upgrade_required?'
>
plugins/docker_manager/app/controllers/docker_manager/admin_controller.rb:67:in `repos'
>
actionpack (8.0.4) lib/action_controller/metal/basic_implicit_render.rb:8:in `send_action'
>
actionpack (8.0.4) lib/abstract_controller/base.rb:215:in `process_action'
>
actionpack (8.0.4) lib/action_controller/metal/rendering.rb:193:in `process_action'
>
actionpack (8.0.4) lib/abstract_controller/callbacks.rb:261:in `block in process_action'
>
activesupport (8.0.4) lib/active_support/callbacks.rb:120:in `block in run_callbacks'
>
app/controllers/application_controller.rb:440:in `block in with_resolved_locale'
>
i18n (1.14.7) lib/i18n.rb:353:in `with_locale'
>
app/controllers/application_controller.rb:440:in `with_resolved_locale'
>
activesupport (8.0.4) lib/active_support/callbacks.rb:129:in `block in run_callbacks'
>
app/controllers/application_controller.rb:1073:in `ensure_dont_cache_page'
>
activesupport (8.0.4) lib/active_support/callbacks.rb:129:in `block in run_callbacks'
>
activesupport (8.0.4) lib/active_support/callbacks.rb:140:in `run_callbacks'
>
actionpack (8.0.4) lib/abstract_controller/callbacks.rb:260:in `process_action'
>
actionpack (8.0.4) lib/action_controller/metal/rescue.rb:27:in `process_action'
>
actionpack (8.0.4) lib/action_controller/metal/instrumentation.rb:76:in `block in process_action'
>
activesupport (8.0.4) lib/active_support/notifications.rb:210:in `block in instrument'
>
activesupport (8.0.4) lib/active_support/notifications/instrumenter.rb:58:in `instrument'
>
activesupport (8.0.4) lib/active_support/notifications.rb:210:in `instrument'
>
actionpack (8.0.4) lib/action_controller/metal/instrumentation.rb:75:in `process_action'
>
actionpack (8.0.4) lib/action_controller/metal/params_wrapper.rb:259:in `process_action'
>
activerecord (8.0.4) lib/active_record/railties/controller_runtime.rb:39:in `process_action'
>
actionpack (8.0.4) lib/abstract_controller/base.rb:152:in `process'
>
actionview (8.0.4) lib/action_view/rendering.rb:40:in `process'
>
rack-mini-profiler (4.0.1) lib/mini_profiler/profiling_methods.rb:116:in `block in profile_method'[ ](https://github.com/rack/rack/blob/master/mini_profiler/profiling_methods.rb#L116)
>
actionpack (8.0.4) lib/action_controller/metal.rb:252:in `dispatch'
>
actionpack (8.0.4) lib/action_controller/metal.rb:335:in `dispatch'
>
actionpack (8.0.4) lib/action_dispatch/routing/route_set.rb:67:in `dispatch'
>
actionpack (8.0.4) lib/action_dispatch/routing/route_set.rb:50:in `serve'
>
actionpack (8.0.4) lib/action_dispatch/routing/mapper.rb:32:in `block in <class:Constraints>'
>
actionpack (8.0.4) lib/action_dispatch/routing/mapper.rb:62:in `serve'
>
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:53:in `block in serve'
>
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:133:in `block in find_routes'
>
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:126:in `each'
>
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:126:in `find_routes'
>
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:34:in `serve'
>
actionpack (8.0.4) lib/action_dispatch/routing/route_set.rb:908:in `call'
>
railties (8.0.4) lib/rails/engine.rb:535:in `call'
>
railties (8.0.4) lib/rails/railtie.rb:226:in `public_send'
>
railties (8.0.4) lib/rails/railtie.rb:226:in `method_missing'
>
actionpack (8.0.4) lib/action_dispatch/routing/mapper.rb:33:in `block in <class:Constraints>'
>
actionpack (8.0.4) lib/action_dispatch/routing/mapper.rb:62:in `serve'
>
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:53:in `block in serve'
>
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:133:in `block in find_routes'
>
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:126:in `each'
>
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:126:in `find_routes'
>
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:34:in `serve'
>
actionpack (8.0.4) lib/action_dispatch/routing/route_set.rb:908:in `call'
>
lib/middleware/omniauth_bypass_middleware.rb:35:in `call'
>
lib/middleware/crawler_hooks.rb:11:in `call'
>
rack (2.2.21) lib/rack/tempfile_reaper.rb:15:in `call'
>
rack (2.2.21) lib/rack/conditional_get.rb:27:in `call'
>
rack (2.2.21) lib/rack/head.rb:12:in `call'
>
actionpack (8.0.4) lib/action_dispatch/http/permissions_policy.rb:38:in `call'
>
lib/content_security_policy/middleware.rb:12:in `call'
>
lib/middleware/anonymous_cache.rb:416:in `call'
>
lib/middleware/csp_script_nonce_injector.rb:12:in `call'
>
config/initializers/008-rack-cors.rb:14:in `call'
>
rack (2.2.21) lib/rack/session/abstract/id.rb:266:in `context'
>
rack (2.2.21) lib/rack/session/abstract/id.rb:260:in `call'
>
actionpack (8.0.4) lib/action_dispatch/middleware/cookies.rb:706:in `call'
>
actionpack (8.0.4) lib/action_dispatch/middleware/callbacks.rb:31:in `block in call'
>
activesupport (8.0.4) lib/active_support/callbacks.rb:100:in `run_callbacks'
>
actionpack (8.0.4) lib/action_dispatch/middleware/callbacks.rb:30:in `call'
>
actionpack (8.0.4) lib/action_dispatch/middleware/debug_exceptions.rb:31:in `call'
>
actionpack (8.0.4) lib/action_dispatch/middleware/show_exceptions.rb:32:in `call'
>
logster (2.20.1) lib/logster/middleware/reporter.rb:40:in `call'
>
lib/middleware/default_headers.rb:13:in `call'
>
railties (8.0.4) lib/rails/rack/logger.rb:41:in `call_app'
>
railties (8.0.4) lib/rails/rack/logger.rb:29:in `call'
>
config/initializers/100-quiet_logger.rb:20:in `call'
>
config/initializers/100-silence_logger.rb:29:in `call'
>
actionpack (8.0.4) lib/action_dispatch/middleware/request_id.rb:34:in `call'
>
lib/middleware/enforce_hostname.rb:23:in `call'
>
rack (2.2.21) lib/rack/method_override.rb:24:in `call'
>
actionpack (8.0.4) lib/action_dispatch/middleware/executor.rb:16:in `call'
>
rack (2.2.21) lib/rack/sendfile.rb:127:in `call'
>
rack-mini-profiler (4.0.1) lib/mini_profiler.rb:334:in `call'
>
message_bus (4.4.1) lib/message_bus/rack/middleware.rb:60:in `call'
>
lib/middleware/request_tracker.rb:321:in `call'
>
actionpack (8.0.4) lib/action_dispatch/middleware/remote_ip.rb:96:in `call'
>
lib/middleware/overload_protections.rb:22:in `call'
>
lib/middleware/processing_request.rb:14:in `call'
>
railties (8.0.4) lib/rails/engine.rb:535:in `call'
>
railties (8.0.4) lib/rails/railtie.rb:226:in `public_send'
>
railties (8.0.4) lib/rails/railtie.rb:226:in `method_missing'
>
rack (2.2.21) lib/rack/urlmap.rb:74:in `block in call'
>
rack (2.2.21) lib/rack/urlmap.rb:58:in `each'
>
rack (2.2.21) lib/rack/urlmap.rb:58:in `call'
>
unicorn (6.1.0) lib/unicorn/http_server.rb:634:in `process_client'
>
unicorn (6.1.0) lib/unicorn/http_server.rb:739:in `worker_loop'
>
unicorn (6.1.0) lib/unicorn/http_server.rb:547:in `spawn_missing_workers'
>
unicorn (6.1.0) lib/unicorn/http_server.rb:143:in `start'
>
unicorn (6.1.0) bin/unicorn:128:in `<top (required)>'
>
vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `load'
>
vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `<main>'

如果有人对这个问题有所了解并能提供帮助，我将不胜感激。

[david (David Taylor)]

感谢您的报告。我正在准备一个修复方案：

FIX: Restore `Discourse::Version::PRE`

一旦该修复在 latest 版本中可用，我将在此处再次发布。

[bananaman]

今天安装更新后出现了同样的错误，重建也无济于事。
昨天更新安装正常，以前从未见过此错误。

plugins/docker_manager/app/controllers/docker_manager/admin_controller.rb:185:in `discourse_upgrade_required?'
plugins/docker_manager/app/controllers/docker_manager/admin_controller.rb:67:in `repos'
actionpack (8.0.4) lib/action_controller/metal/basic_implicit_render.rb:8:in `send_action'
actionpack (8.0.4) lib/abstract_controller/base.rb:215:in `process_action'
actionpack (8.0.4) lib/action_controller/metal/rendering.rb:193:in `process_action'
actionpack (8.0.4) lib/abstract_controller/callbacks.rb:261:in `block in process_action'
activesupport (8.0.4) lib/active_support/callbacks.rb:120:in `block in run_callbacks'
app/controllers/application_controller.rb:440:in `block in with_resolved_locale'
i18n (1.14.7) lib/i18n.rb:353:in `with_locale'
app/controllers/application_controller.rb:440:in `with_resolved_locale'
activesupport (8.0.4) lib/active_support/callbacks.rb:129:in `block in run_callbacks'
app/controllers/application_controller.rb:1073:in `ensure_dont_cache_page'
activesupport (8.0.4) lib/active_support/callbacks.rb:129:in `block in run_callbacks'
activesupport (8.0.4) lib/active_support/callbacks.rb:140:in `run_callbacks'
actionpack (8.0.4) lib/abstract_controller/callbacks.rb:260:in `process_action'
actionpack (8.0.4) lib/action_controller/metal/rescue.rb:27:in `process_action'
actionpack (8.0.4) lib/action_controller/metal/instrumentation.rb:76:in `block in process_action'
activesupport (8.0.4) lib/active_support/notifications.rb:210:in `block in instrument'
activesupport (8.0.4) lib/active_support/notifications/instrumenter.rb:58:in `instrument'
activesupport (8.0.4) lib/active_support/notifications.rb:210:in `instrument'
actionpack (8.0.4) lib/action_controller/metal/instrumentation.rb:75:in `process_action'
actionpack (8.0.4) lib/action_controller/metal/params_wrapper.rb:259:in `process_action'
activerecord (8.0.4) lib/active_record/railties/controller_runtime.rb:39:in `process_action'
actionpack (8.0.4) lib/abstract_controller/base.rb:152:in `process'
actionview (8.0.4) lib/action_view/rendering.rb:40:in `process'
rack-mini-profiler (4.0.1) lib/mini_profiler/profiling_methods.rb:116:in `block in profile_method' 
actionpack (8.0.4) lib/action_controller/metal.rb:252:in `dispatch'
actionpack (8.0.4) lib/action_controller/metal.rb:335:in `dispatch'
actionpack (8.0.4) lib/action_dispatch/routing/route_set.rb:67:in `dispatch'
actionpack (8.0.4) lib/action_dispatch/routing/route_set.rb:50:in `serve'
actionpack (8.0.4) lib/action_dispatch/routing/mapper.rb:32:in `block in <class:Constraints>'
actionpack (8.0.4) lib/action_dispatch/routing/mapper.rb:62:in `serve'
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:53:in `block in serve'
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:133:in `block in find_routes'
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:126:in `each'
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:126:in `find_routes'
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:34:in `serve'
actionpack (8.0.4) lib/action_dispatch/routing/route_set.rb:908:in `call'
railties (8.0.4) lib/rails/engine.rb:535:in `call'
railties (8.0.4) lib/rails/railtie.rb:226:in `public_send'
railties (8.0.4) lib/rails/railtie.rb:226:in `method_missing'
actionpack (8.0.4) lib/action_dispatch/routing/mapper.rb:33:in `block in <class:Constraints>'
actionpack (8.0.4) lib/action_dispatch/routing/mapper.rb:62:in `serve'
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:53:in `block in serve'
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:133:in `block in find_routes'
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:126:in `each'
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:126:in `find_routes'
actionpack (8.0.4) lib/action_dispatch/journey/router.rb:34:in `serve'
actionpack (8.0.4) lib/action_dispatch/routing/route_set.rb:908:in `call'
lib/middleware/omniauth_bypass_middleware.rb:35:in `call'
lib/middleware/crawler_hooks.rb:11:in `call'
rack (2.2.21) lib/rack/tempfile_reaper.rb:15:in `call'
rack (2.2.21) lib/rack/conditional_get.rb:27:in `call'
rack (2.2.21) lib/rack/head.rb:12:in `call'
actionpack (8.0.4) lib/action_dispatch/http/permissions_policy.rb:38:in `call'
lib/content_security_policy/middleware.rb:12:in `call'
lib/middleware/anonymous_cache.rb:416:in `call'
lib/middleware/csp_script_nonce_injector.rb:12:in `call'
config/initializers/008-rack-cors.rb:14:in `call'
rack (2.2.21) lib/rack/session/abstract/id.rb:266:in `context'
rack (2.2.21) lib/rack/session/abstract/id.rb:260:in `call'
actionpack (8.0.4) lib/action_dispatch/middleware/cookies.rb:706:in `call'
actionpack (8.0.4) lib/action_dispatch/middleware/callbacks.rb:31:in `block in call'
activesupport (8.0.4) lib/active_support/callbacks.rb:100:in `run_callbacks'
actionpack (8.0.4) lib/action_dispatch/middleware/callbacks.rb:30:in `call'
actionpack (8.0.4) lib/action_dispatch/middleware/debug_exceptions.rb:31:in `call'
actionpack (8.0.4) lib/action_dispatch/middleware/show_exceptions.rb:32:in `call'
logster (2.20.1) lib/logster/middleware/reporter.rb:40:in `call'
lib/middleware/default_headers.rb:13:in `call'
railties (8.0.4) lib/rails/rack/logger.rb:41:in `call_app'
railties (8.0.4) lib/rails/rack/logger.rb:29:in `call'
config/initializers/100-quiet_logger.rb:20:in `call'
config/initializers/100-silence_logger.rb:29:in `call'
actionpack (8.0.4) lib/action_dispatch/middleware/request_id.rb:34:in `call'
lib/middleware/enforce_hostname.rb:23:in `call'
rack (2.2.21) lib/rack/method_override.rb:24:in `call'
rack (2.2.21) lib/rack/sendfile.rb:127:in `call'
rack-mini-profiler (4.0.1) lib/mini_profiler.rb:334:in `call'
message_bus (4.4.1) lib/message_bus/rack/middleware.rb:60:in `call'
lib/middleware/request_tracker.rb:321:in `call'
actionpack (8.0.4) lib/action_dispatch/middleware/remote_ip.rb:96:in `call'
lib/middleware/overload_protections.rb:22:in `call'
lib/middleware/processing_request.rb:14:in `call'
rails_multisite (7.0.0) lib/rails_multisite/middleware.rb:26:in `call'
railties (8.0.4) lib/rails/engine.rb:535:in `call'
railties (8.0.4) lib/rails/railtie.rb:226:in `public_send'
railties (8.0.4) lib/rails/railtie.rb:226:in `method_missing'
rack (2.2.21) lib/rack/urlmap.rb:74:in `block in call'
rack (2.2.21) lib/rack/urlmap.rb:58:in `each'
rack (2.2.21) lib/rack/urlmap.rb:58:in `call'
unicorn (6.1.0) lib/unicorn/http_server.rb:634:in `process_client'
unicorn (6.1.0) lib/unicorn/http_server.rb:739:in `worker_loop'
unicorn (6.1.0) lib/unicorn/http_server.rb:547:in `spawn_missing_workers'
unicorn (6.1.0) lib/unicorn/http_server.rb:143:in `start'
unicorn (6.1.0) bin/unicorn:128:in `<top (required)>'
vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `load'
vendor/bundle/ruby/3.3.0/bin/unicorn:25:in `<main>'

[sniper756]

我也出现这个问题，rebuild 两次没有解决问题，等待修复中。

[david (David Taylor)]

抱歉延迟了——我们今天的持续集成（CI）出现了一些无关的问题。

修复程序现已在 latest 上线，因此再次更新应该可以解决问题。如果仍有问题，请告知我们。

[Milenski (Milen Valov)]

我确认，问题已解决。通过终端重新构建后一切正常。谢谢。

[david (David Taylor)]

我已将关于迁移失败的讨论分到了一个单独的主题中：

Migration error in 'rename_discourse_rewind_disabled_to_enabled'

重新rebuild 失败了~日志如下： discourse -c 'bundle exec rake db:migrate' rake aborted! StandardError: An error has occurred, this and all later migrations canceled: (StandardError) You must drop a column's default value before marking it as readonly I, [2026-01-08T16:18:49.016491 #1] INFO -- : Terminating async processes I, [2026-01-08T16:18:49.018961 #1] INFO -- : Sending INT to HOME=/var/lib/postgresql USER=postgres exec chpst -u postgres:postgres:ssl-cert -U postgres:postgres:ssl-cert /usr/lib/pos…

我将关闭这个主题，因为我们已经确认 ::PRE 错误已解决。再次感谢大家的报告！