# NoMethodError undefined method `+' for nil:NilClass - **Location:** app/models/contest_service/ranker.rb:122 - **Occurred at:** 2026-04-19 15:50:04 UTC ## Backtrace ### Compact Trace ``` app/models/contest_service/ranker.rb:122:in `scores' app/models/contest_service/ranker.rb:165:in `block in participant_scores' app/models/contest_service/ranker.rb:164:in `each' app/models/contest_service/ranker.rb:164:in `participant_scores' app/models/contest_service/result.rb:81:in `block (4 levels) in build_results' app/models/contest_service/result.rb:77:in `block (3 levels) in build_results' app/models/contest_service/result.rb:71:in `block (2 levels) in build_results' app/models/contest_service/result.rb:62:in `block in build_results' app/models/contest_service/result.rb:55:in `build_results' app/models/contest_service/result.rb:17:in `block in results' app/models/contest_service/result.rb:16:in `results' app/controllers/api/v1/contests_controller.rb:56:in `results' ``` ### Full Trace ``` /var/www/oblyk/api/releases/20260419135840/app/models/contest_service/ranker.rb:122:in `scores' /var/www/oblyk/api/releases/20260419135840/app/models/contest_service/ranker.rb:165:in `block in participant_scores' /var/www/oblyk/api/releases/20260419135840/app/models/contest_service/ranker.rb:164:in `each' /var/www/oblyk/api/releases/20260419135840/app/models/contest_service/ranker.rb:164:in `participant_scores' /var/www/oblyk/api/releases/20260419135840/app/models/contest_service/result.rb:81:in `block (4 levels) in build_results' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/relation/delegation.rb:87:in `each' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/relation/delegation.rb:87:in `each' /var/www/oblyk/api/releases/20260419135840/app/models/contest_service/result.rb:77:in `block (3 levels) in build_results' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/relation/delegation.rb:87:in `each' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/relation/delegation.rb:87:in `each' /var/www/oblyk/api/releases/20260419135840/app/models/contest_service/result.rb:71:in `block (2 levels) in build_results' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/relation/batches.rb:70:in `block (2 levels) in find_each' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/relation/batches.rb:70:in `each' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/relation/batches.rb:70:in `block in find_each' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/relation/batches.rb:136:in `block in find_in_batches' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/relation/batches.rb:238:in `block in in_batches' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/relation/batches.rb:222:in `loop' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/relation/batches.rb:222:in `in_batches' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/relation/batches.rb:135:in `find_in_batches' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/relation/batches.rb:69:in `find_each' /var/www/oblyk/api/releases/20260419135840/app/models/contest_service/result.rb:62:in `block in build_results' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/relation/delegation.rb:87:in `each' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/relation/delegation.rb:87:in `each' /var/www/oblyk/api/releases/20260419135840/app/models/contest_service/result.rb:55:in `build_results' /var/www/oblyk/api/releases/20260419135840/app/models/contest_service/result.rb:17:in `block in results' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/cache.rb:332:in `block in fetch' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/cache.rb:717:in `block in save_block_result_to_cache' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/cache.rb:686:in `block in instrument' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/notifications.rb:182:in `instrument' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/cache.rb:686:in `instrument' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/cache.rb:716:in `save_block_result_to_cache' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/cache.rb:332:in `fetch' /var/www/oblyk/api/releases/20260419135840/app/models/contest_service/result.rb:16:in `results' /var/www/oblyk/api/releases/20260419135840/app/controllers/api/v1/contests_controller.rb:56:in `results' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_controller/metal/basic_implicit_render.rb:6:in `send_action' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/abstract_controller/base.rb:195:in `process_action' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_controller/metal/rendering.rb:30:in `process_action' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/abstract_controller/callbacks.rb:42:in `block in process_action' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/callbacks.rb:112:in `block in run_callbacks' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/rorvswild-1.6.0/lib/rorvswild/plugin/action_controller.rb:28:in `around_action' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/callbacks.rb:121:in `instance_exec' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/callbacks.rb:121:in `block in run_callbacks' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/callbacks.rb:139:in `run_callbacks' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/abstract_controller/callbacks.rb:41:in `process_action' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_controller/metal/rescue.rb:22:in `process_action' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_controller/metal/instrumentation.rb:33:in `block in process_action' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/notifications.rb:180:in `block in instrument' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/notifications/instrumenter.rb:24:in `instrument' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/notifications.rb:180:in `instrument' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_controller/metal/instrumentation.rb:32:in `process_action' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_controller/metal/params_wrapper.rb:245:in `process_action' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activerecord-6.0.3.6/lib/active_record/railties/controller_runtime.rb:27:in `process_action' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/abstract_controller/base.rb:136:in `process' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_controller/metal.rb:190:in `dispatch' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_controller/metal.rb:254:in `dispatch' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_dispatch/routing/route_set.rb:50:in `dispatch' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_dispatch/routing/route_set.rb:33:in `serve' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_dispatch/journey/router.rb:49:in `block in serve' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_dispatch/journey/router.rb:32:in `each' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_dispatch/journey/router.rb:32:in `serve' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_dispatch/routing/route_set.rb:834:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/session/abstract/id.rb:266:in `context' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/session/abstract/id.rb:260:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_dispatch/middleware/cookies.rb:648:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/etag.rb:27:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/conditional_get.rb:27:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/head.rb:12:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_dispatch/middleware/callbacks.rb:27:in `block in call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/callbacks.rb:101:in `run_callbacks' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_dispatch/middleware/callbacks.rb:26:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_dispatch/middleware/actionable_exceptions.rb:18:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_dispatch/middleware/debug_exceptions.rb:32:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_dispatch/middleware/show_exceptions.rb:33:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/railties-6.0.3.6/lib/rails/rack/logger.rb:37:in `call_app' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/railties-6.0.3.6/lib/rails/rack/logger.rb:26:in `block in call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/tagged_logging.rb:80:in `block in tagged' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/tagged_logging.rb:28:in `tagged' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/tagged_logging.rb:80:in `tagged' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/railties-6.0.3.6/lib/rails/rack/logger.rb:26:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_dispatch/middleware/remote_ip.rb:81:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/request_store-1.5.0/lib/request_store/middleware.rb:19:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_dispatch/middleware/request_id.rb:27:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/runtime.rb:22:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/activesupport-6.0.3.6/lib/active_support/cache/strategy/local_cache_middleware.rb:29:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_dispatch/middleware/executor.rb:14:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/rack-2.2.3/lib/rack/sendfile.rb:110:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_dispatch/middleware/ssl.rb:74:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/actionpack-6.0.3.6/lib/action_dispatch/middleware/host_authorization.rb:76:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/rack-cors-1.1.1/lib/rack/cors.rb:100:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/rorvswild-1.6.0/lib/rorvswild/plugin/middleware.rb:20:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/railties-6.0.3.6/lib/rails/engine.rb:527:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/puma-4.3.7/lib/puma/configuration.rb:228:in `call' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/puma-4.3.7/lib/puma/server.rb:713:in `handle_request' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/puma-4.3.7/lib/puma/server.rb:472:in `process_client' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/puma-4.3.7/lib/puma/server.rb:328:in `block in run' /var/www/oblyk/api/shared/bundle/ruby/2.6.0/gems/puma-4.3.7/lib/puma/thread_pool.rb:134:in `block in spawn_thread' ``` ## Request - **Name:** Api::V1::ContestsController#results - **Method:** GET - **URL:** https://api.oblyk.org/api/v1/gyms/43/contests/267/results.json?by_team=false&unisex=false - **Browser:** Safari 17 ## Parameters ```json { "id": "267", "action": "results", "format": "json", "gym_id": "43", "unisex": "false", "by_team": "false", "controller": "api/v1/contests" } ``` ## Headers | Header | Value | |--------|-------| | Host | api.oblyk.org | | Accept | application/json, text/plain, */* | | Cf-Ray | 9eed0fe58d8c95bb-CDG | | Origin | https://oblyk.org | | Referer | https://oblyk.org/ | | Version | HTTP/1.0 | | Cdn-Loop | cloudflare; loops=1 | | Priority | u=3, i | | Cf-Visitor | {"scheme":"https"} | | Connection | close | | User-Agent | Mozilla/5.0 (iPhone; CPU iPhone OS 17_6_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.6.1 Mobile/15E148 Safari/604.1 PWAShell | | Cf-Ipcountry | FR | | Authorization | [FILTERED] | | Sec-Fetch-Dest | empty | | Sec-Fetch-Mode | cors | | Sec-Fetch-Site | same-site | | Accept-Encoding | gzip, br | | Accept-Language | fr-FR,fr;q=0.9 | | X-Forwarded-For | 87.240.80.244, 172.71.135.120 | | Cf-Connecting-Ip | 87.240.80.244 | | X-Forwarded-Proto | https | | Httpapiaccesstoken | [FILTERED] | ## Environment | Variable | Value | |----------|-------| | os | Linux 5.10.0-14-cloud-amd64 | | cwd | /var/www/oblyk/api/releases/20260419135840 | | pid | 2585089 | | host | oblyk-api | | ruby | ruby 2.6.5p114 (2019-10-01 revision 67812) [x86_64-linux] | | user | oblyk | | rails | 6.0.3.6 | | revision | 32d10418b43110b3eb4a704633ec9cfbbbbaf4d6 | [View on RoRvsWild ↗](https://www.rorvswild.com/applications/135627/errors/86526691)