Reactions plugin: 500 Internal Server Error

[OrkoGrayskull]

Good morning community,

when someone clicks on their profile and there clicks activity → reactions, this throws a HTTP 500 Error:

Server error
while loading /discourse-reactions/posts/reactions.json
Error code: 500 Internal Server Error

I am using a Discourse Standard installation (2.9.0.beta10/ c752d68737 ) with the following plugins:

• GitHub - discourse/docker_manager: Plugin for use with discourse docker image
• GitHub - discourse/discourse-solved: Allow accepted answers on topics
• GitHub - discourse/discourse-reactions
• GitHub - discourse/discourse-assign: Plugin for assigning users to a topic
• GitHub - discourse/discourse-no-bump: A plugin to prevent users from bumping their own topics

There seems to be a bug.

[RGJ (Richard - Communiteq)]

Cannot repro, can you please check /logs and post any details about the error here?

[OrkoGrayskull]

I can only find one error in /logs:

NoMethodError (undefined method title' for nil:NilClass) app/serializers/group_post_serializer.rb:21:in title’ (eval):7:in _fast_attributes' lib/freedom_patches/ams_include_without_root.rb:57:in i

app/serializers/group_post_serializer.rb:21:in `title'
(eval):7:in `_fast_attributes'
active_model_serializers (0.8.4) lib/active_model/serializer.rb:468:in `rescue in attributes'
active_model_serializers (0.8.4) lib/active_model/serializer.rb:455:in `attributes'
active_model_serializers (0.8.4) lib/active_model/serializer.rb:480:in `_serializable_hash'
active_model_serializers (0.8.4) lib/active_model/serializer.rb:359:in `serializable_hash'
active_model_serializers (0.8.4) lib/active_model/serializer/associations.rb:200:in `serialize'
lib/freedom_patches/ams_include_without_root.rb:57:in `include!'
active_model_serializers (0.8.4) lib/active_model/serializer.rb:368:in `block in include_associations!'
active_model_serializers (0.8.4) lib/active_model/serializer.rb:367:in `each_key'
active_model_serializers (0.8.4) lib/active_model/serializer.rb:367:in `include_associations!'
active_model_serializers (0.8.4) lib/active_model/serializer.rb:362:in `serializable_hash'
active_model_serializers (0.8.4) lib/active_model/array_serializer.rb:89:in `block in _serializable_array'
active_model_serializers (0.8.4) lib/active_model/array_serializer.rb:79:in `map'
active_model_serializers (0.8.4) lib/active_model/array_serializer.rb:79:in `_serializable_array'
active_model_serializers (0.8.4) lib/active_model/array_serializer.rb:73:in `serializable_array'
active_model_serializers (0.8.4) lib/active_model/array_serializer.rb:53:in `as_json'
app/controllers/application_controller.rb:519:in `serialize_data'
app/controllers/application_controller.rb:530:in `render_serialized'
plugins/discourse-reactions/app/controllers/discourse_reactions/custom_reactions_controller.rb:54:in `reactions_given'
actionpack (7.0.3.1) lib/action_controller/metal/basic_implicit_render.rb:6:in `send_action'
actionpack (7.0.3.1) lib/abstract_controller/base.rb:215:in `process_action'
actionpack (7.0.3.1) lib/action_controller/metal/rendering.rb:53:in `process_action'
actionpack (7.0.3.1) lib/abstract_controller/callbacks.rb:234:in `block in process_action'
activesupport (7.0.3.1) lib/active_support/callbacks.rb:118:in `block in run_callbacks'
app/controllers/application_controller.rb:413:in `block in with_resolved_locale'
i18n (1.12.0) lib/i18n.rb:322:in `with_locale'
app/controllers/application_controller.rb:413:in `with_resolved_locale'
activesupport (7.0.3.1) lib/active_support/callbacks.rb:127:in `block in run_callbacks'
activesupport (7.0.3.1) lib/active_support/callbacks.rb:138:in `run_callbacks'
actionpack (7.0.3.1) lib/abstract_controller/callbacks.rb:233:in `process_action'
actionpack (7.0.3.1) lib/action_controller/metal/rescue.rb:22:in `process_action'
actionpack (7.0.3.1) lib/action_controller/metal/instrumentation.rb:67:in `block in process_action'
activesupport (7.0.3.1) lib/active_support/notifications.rb:206:in `block in instrument'
activesupport (7.0.3.1) lib/active_support/notifications/instrumenter.rb:24:in `instrument'
activesupport (7.0.3.1) lib/active_support/notifications.rb:206:in `instrument'
actionpack (7.0.3.1) lib/action_controller/metal/instrumentation.rb:66:in `process_action'
actionpack (7.0.3.1) lib/action_controller/metal/params_wrapper.rb:259:in `process_action'
activerecord (7.0.3.1) lib/active_record/railties/controller_runtime.rb:27:in `process_action'
actionpack (7.0.3.1) lib/abstract_controller/base.rb:151:in `process'
actionview (7.0.3.1) lib/action_view/rendering.rb:39:in `process'
rack-mini-profiler (3.0.0) lib/mini_profiler/profiling_methods.rb:111:in `block in profile_method'


actionpack (7.0.3.1) lib/action_controller/metal.rb:188:in `dispatch'
actionpack (7.0.3.1) lib/action_controller/metal.rb:251:in `dispatch'
actionpack (7.0.3.1) lib/action_dispatch/routing/route_set.rb:49:in `dispatch'
actionpack (7.0.3.1) lib/action_dispatch/routing/route_set.rb:32:in `serve'
actionpack (7.0.3.1) lib/action_dispatch/journey/router.rb:50:in `block in serve'
actionpack (7.0.3.1) lib/action_dispatch/journey/router.rb:32:in `each'
actionpack (7.0.3.1) lib/action_dispatch/journey/router.rb:32:in `serve'
actionpack (7.0.3.1) lib/action_dispatch/routing/route_set.rb:852:in `call'
railties (7.0.3.1) lib/rails/engine.rb:530:in `call'
railties (7.0.3.1) lib/rails/railtie.rb:226:in `public_send'
railties (7.0.3.1) lib/rails/railtie.rb:226:in `method_missing'
actionpack (7.0.3.1) lib/action_dispatch/routing/mapper.rb:19:in `block in <class:Constraints>'
actionpack (7.0.3.1) lib/action_dispatch/routing/mapper.rb:48:in `serve'
actionpack (7.0.3.1) lib/action_dispatch/journey/router.rb:50:in `block in serve'
actionpack (7.0.3.1) lib/action_dispatch/journey/router.rb:32:in `each'
actionpack (7.0.3.1) lib/action_dispatch/journey/router.rb:32:in `serve'
actionpack (7.0.3.1) lib/action_dispatch/routing/route_set.rb:852:in `call'
lib/middleware/omniauth_bypass_middleware.rb:71:in `call'
rack (2.2.4) lib/rack/tempfile_reaper.rb:15:in `call'
rack (2.2.4) lib/rack/conditional_get.rb:27:in `call'
rack (2.2.4) lib/rack/head.rb:12:in `call'
actionpack (7.0.3.1) lib/action_dispatch/http/permissions_policy.rb:38:in `call'
lib/content_security_policy/middleware.rb:12:in `call'
lib/middleware/anonymous_cache.rb:368:in `call'
rack (2.2.4) lib/rack/session/abstract/id.rb:266:in `context'
rack (2.2.4) lib/rack/session/abstract/id.rb:260:in `call'
actionpack (7.0.3.1) lib/action_dispatch/middleware/cookies.rb:697:in `call'
actionpack (7.0.3.1) lib/action_dispatch/middleware/callbacks.rb:27:in `block in call'
activesupport (7.0.3.1) lib/active_support/callbacks.rb:99:in `run_callbacks'
actionpack (7.0.3.1) lib/action_dispatch/middleware/callbacks.rb:26:in `call'
actionpack (7.0.3.1) lib/action_dispatch/middleware/debug_exceptions.rb:28:in `call'
actionpack (7.0.3.1) lib/action_dispatch/middleware/show_exceptions.rb:26:in `call'
logster (2.11.3) lib/logster/middleware/reporter.rb:43:in `call'
railties (7.0.3.1) lib/rails/rack/logger.rb:40:in `call_app'
railties (7.0.3.1) lib/rails/rack/logger.rb:27:in `call'
config/initializers/100-quiet_logger.rb:23:in `call'
config/initializers/100-silence_logger.rb:31:in `call'
actionpack (7.0.3.1) lib/action_dispatch/middleware/remote_ip.rb:93:in `call'
actionpack (7.0.3.1) lib/action_dispatch/middleware/request_id.rb:26:in `call'
lib/middleware/enforce_hostname.rb:23:in `call'
rack (2.2.4) lib/rack/method_override.rb:24:in `call'
actionpack (7.0.3.1) lib/action_dispatch/middleware/executor.rb:14:in `call'
rack (2.2.4) lib/rack/sendfile.rb:110:in `call'
actionpack (7.0.3.1) lib/action_dispatch/middleware/host_authorization.rb:131:in `call'
rack-mini-profiler (3.0.0) lib/mini_profiler/profiler.rb:393:in `call'


message_bus (4.2.0) lib/message_bus/rack/middleware.rb:60:in `call'
lib/middleware/request_tracker.rb:202:in `call'
railties (7.0.3.1) lib/rails/engine.rb:530:in `call'
railties (7.0.3.1) lib/rails/railtie.rb:226:in `public_send'
railties (7.0.3.1) lib/rails/railtie.rb:226:in `method_missing'
rack (2.2.4) lib/rack/urlmap.rb:74:in `block in call'
rack (2.2.4) lib/rack/urlmap.rb:58:in `each'
rack (2.2.4) 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/2.7.0/bin/unicorn:25:in `load'
vendor/bundle/ruby/2.7.0/bin/unicorn:25:in `<main>'

The rest are just warnings that have nothing to do with the 500 error. In any case, I have not found anything that indicates this.

[Don]

Hello,

I can repro this but don’t know yet what cause it exactly. On my test site, it works on some users but others not.

Console errors:

[OrkoGrayskull]

Yeah, true. For some users it works, for others not.

[JammyDodger]

I can’t replicate this so far. Is there anything special about those users or their reactions? Or any semi-related admin settings that may have been tweaked?

[Don]

Ok finally I think I have a clean repro for this: I think this is happens when the user has reaction in one of the not deleted post in a deleted topic (OP).

Repro:

1. Add reaction to OP and the second post.
   

   

2. Check the Test1 user activity/reactions page it works now as expected
   

   

3. Delete only the topic OP with delete topic button so the second post not deleted.
   

   

4. Check the Test1 user activity/reactions page again drop a 500 error because I think the route is broken.
   

   

5. Un-Delete the topic or delete the post too will recover the activity/reactions page.

---

It also happens with deleted category if the About the … category topic has reactions. I think because the actual post not deleted.

1. Add a reaction with Test1 user in the Test Subcategory category.
   

   

2. Check the Test1 user activity/reactions page works as expexted
   

   

3. Delete Test Subcategory category.

4. Check the Test1 user activity/reactions page again will drop a 500 error because the reaction left on the OP and the route is broken.
   

   

[joffreyjaffeux]

Thanks for report

I have a fix under review for this, will let you know when merged.

[joffreyjaffeux]

That should fix it: FIX: deleted topic should exclude it from reactions given by jjaffeux · Pull Request #191 · discourse/discourse-reactions · GitHub

Let me know how it goes for you please.