Milestone Deletion Fails

Summary

We have the problem, we can't delete a milestone as the deletion request results in 500 Internal Server Error.

Steps to reproduce

1. We had created our milestones in the top level group
2. We assigned issues and merge requests to them
3. We decided to change our milestones and tried to delete the outdated milestones
4. The Milestone fails to delete

Confirmed steps to reproduce

1. Create a milestone in the top-level group
2. Assign an to an MR from a project immediately beneath that group (possibly works with projects in subgroups also)
3. Try to delete the milestone, notice an error with missing jira_subscription_exists? method

Example Project

On gitlab.com the milestone deletion is working correctly

What is the current bug behavior?

A milestone fails to delete

Additionally, the "Delete" modal is not rendering properly:

What is the expected correct behavior?

The milestone would have been deleted

Relevant logs and/or screenshots

Expand for Tail Output

==> /var/log/gitlab/gitlab-rails/production.log <==
Completed 500 Internal Server Error in 3669ms (ActiveRecord: 457.4ms | Elasticsearch: 0.0ms | Allocations: 1900270)

==> /var/log/gitlab/gitlab-rails/production_json.log <==
{"method":"DELETE","path":"/groups/removed/-/milestones/1","format":"json","controller":"Groups::MilestonesController","action":"destroy","status":500,"time":"2021-05-08T15:40:40.666Z","params":[{"key":"group_id","value":"removed"},{"key":"id","value":"1"}],"remote_ip":"removed","user_id":6,"username":"Taucher2003","ua":"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.93 Safari/537.36","correlation_id":"01F56A6F1DMJ5R3SD02MFGDMW8","meta.user":"Taucher2003","meta.root_namespace":"removed","meta.caller_id":"Groups::MilestonesController#destroy","meta.remote_ip":"removed","meta.feature_category":"issue_tracking","meta.client_id":"user/6","gitaly_calls":3,"gitaly_duration_s":0.018214,"redis_calls":109,"redis_duration_s":0.037925,"redis_read_bytes":4694,"redis_write_bytes":1876610,"redis_cache_calls":78,"redis_cache_duration_s":0.030802,"redis_cache_read_bytes":3384,"redis_cache_write_bytes":1821449,"redis_queues_calls":15,"redis_queues_duration_s":0.002432,"redis_queues_read_bytes":814,"redis_queues_write_bytes":51009,"redis_shared_state_calls":16,"redis_shared_state_duration_s":0.004691,"redis_shared_state_read_bytes":496,"redis_shared_state_write_bytes":4152,"db_count":604,"db_write_count":95,"db_cached_count":92,"cpu_s":3.454016,"mem_objects":2111614,"mem_bytes":179273419,"mem_mallocs":871182,"queue_duration_s":0.014826,"cf_ray":"64c3c999b93b073e-FRA","cf_request_id":"09ee3c54170000073e9a2f3000000001","exception.class":"NoMethodError","exception.message":"undefined method `jira_subscription_exists?' for #","exception.backtrace":["app/services/merge_requests/base_service.rb:62:in `enqueue_jira_connect_messages_for'","lib/gitlab/metrics/instrumentation.rb:160:in `block in enqueue_jira_connect_messages_for'","lib/gitlab/metrics/method_call.rb:27:in `measure'","lib/gitlab/metrics/instrumentation.rb:160:in `enqueue_jira_connect_messages_for'","app/services/merge_requests/base_service.rb:27:in `execute_hooks'","ee/app/services/ee/merge_requests/base_service.rb:14:in `execute_hooks'","app/services/issuable_base_service.rb:261:in `update'","app/services/merge_requests/base_service.rb:78:in `update'","lib/gitlab/metrics/instrumentation.rb:160:in `block in update'","lib/gitlab/metrics/method_call.rb:27:in `measure'","lib/gitlab/metrics/instrumentation.rb:160:in `update'","app/services/merge_requests/update_service.rb:90:in `general_fallback'","ee/app/services/ee/merge_requests/update_service.rb:18:in `general_fallback'","app/services/merge_requests/update_service.rb:14:in `execute'","lib/gitlab/metrics/instrumentation.rb:160:in `block in execute'","lib/gitlab/metrics/method_call.rb:27:in `measure'","lib/gitlab/metrics/instrumentation.rb:160:in `execute'","app/services/milestones/destroy_service.rb:14:in `block (2 levels) in execute'","app/services/milestones/destroy_service.rb:13:in `block in execute'","lib/gitlab/database.rb:342:in `block in transaction'","lib/gitlab/database.rb:341:in `transaction'","app/services/milestones/destroy_service.rb:6:in `execute'","lib/gitlab/metrics/instrumentation.rb:160:in `block in execute'","lib/gitlab/metrics/method_call.rb:27:in `measure'","lib/gitlab/metrics/instrumentation.rb:160:in `execute'","app/controllers/groups/milestones_controller.rb:50:in `destroy'","ee/lib/gitlab/ip_address_state.rb:10:in `with'","ee/app/controllers/ee/application_controller.rb:44:in `set_current_ip_address'","app/controllers/application_controller.rb:485:in `set_current_admin'","lib/gitlab/session.rb:11:in `with_session'","app/controllers/application_controller.rb:476:in `set_session_storage'","lib/gitlab/i18n.rb:73:in `with_locale'","lib/gitlab/i18n.rb:79:in `with_user_locale'","app/controllers/application_controller.rb:470:in `set_locale'","app/controllers/application_controller.rb:463:in `block in set_current_context'","lib/gitlab/application_context.rb:70:in `block in use'","lib/gitlab/application_context.rb:70:in `use'","lib/gitlab/application_context.rb:27:in `with_context'","app/controllers/application_controller.rb:454:in `set_current_context'","lib/gitlab/metrics/elasticsearch_rack_middleware.rb:16:in `call'","lib/gitlab/middleware/rails_queue_duration.rb:33:in `call'","lib/gitlab/metrics/rack_middleware.rb:16:in `block in call'","lib/gitlab/metrics/transaction.rb:56:in `run'","lib/gitlab/metrics/rack_middleware.rb:16:in `call'","lib/gitlab/request_profiler/middleware.rb:17:in `call'","lib/gitlab/jira/middleware.rb:19:in `call'","lib/gitlab/middleware/go.rb:20:in `call'","lib/gitlab/etag_caching/middleware.rb:21:in `call'","lib/gitlab/middleware/multipart.rb:172:in `call'","lib/gitlab/middleware/read_only/controller.rb:50:in `call'","lib/gitlab/middleware/read_only.rb:18:in `call'","lib/gitlab/middleware/same_site_cookies.rb:27:in `call'","lib/gitlab/middleware/handle_malformed_strings.rb:21:in `call'","lib/gitlab/middleware/basic_health_check.rb:25:in `call'","lib/gitlab/middleware/handle_ip_spoof_attack_error.rb:25:in `call'","lib/gitlab/middleware/request_context.rb:21:in `call'","config/initializers/fix_local_cache_middleware.rb:11:in `call'","lib/gitlab/middleware/rack_multipart_tempfile_factory.rb:21:in `call'","lib/gitlab/metrics/requests_rack_middleware.rb:76:in `call'","lib/gitlab/middleware/release_env.rb:12:in `call'"],"db_duration_s":0.45736,"view_duration_s":0.0,"duration_s":3.85877}

==> /var/log/gitlab/gitlab-rails/production.log <==
  
NoMethodError (undefined method `jira_subscription_exists?' for #):
  
app/services/merge_requests/base_service.rb:62:in `enqueue_jira_connect_messages_for'
lib/gitlab/metrics/instrumentation.rb:160:in `block in enqueue_jira_connect_messages_for'
lib/gitlab/metrics/method_call.rb:27:in `measure'
lib/gitlab/metrics/instrumentation.rb:160:in `enqueue_jira_connect_messages_for'
app/services/merge_requests/base_service.rb:27:in `execute_hooks'
ee/app/services/ee/merge_requests/base_service.rb:14:in `execute_hooks'
app/services/issuable_base_service.rb:261:in `update'
app/services/merge_requests/base_service.rb:78:in `update'
lib/gitlab/metrics/instrumentation.rb:160:in `block in update'
lib/gitlab/metrics/method_call.rb:27:in `measure'
lib/gitlab/metrics/instrumentation.rb:160:in `update'
app/services/merge_requests/update_service.rb:90:in `general_fallback'
ee/app/services/ee/merge_requests/update_service.rb:18:in `general_fallback'
app/services/merge_requests/update_service.rb:14:in `execute'
lib/gitlab/metrics/instrumentation.rb:160:in `block in execute'
lib/gitlab/metrics/method_call.rb:27:in `measure'
lib/gitlab/metrics/instrumentation.rb:160:in `execute'
app/services/milestones/destroy_service.rb:14:in `block (2 levels) in execute'
app/services/milestones/destroy_service.rb:13:in `block in execute'
lib/gitlab/database.rb:342:in `block in transaction'
lib/gitlab/database.rb:341:in `transaction'
app/services/milestones/destroy_service.rb:6:in `execute'
lib/gitlab/metrics/instrumentation.rb:160:in `block in execute'
lib/gitlab/metrics/method_call.rb:27:in `measure'
lib/gitlab/metrics/instrumentation.rb:160:in `execute'
app/controllers/groups/milestones_controller.rb:50:in `destroy'
ee/lib/gitlab/ip_address_state.rb:10:in `with'
ee/app/controllers/ee/application_controller.rb:44:in `set_current_ip_address'
app/controllers/application_controller.rb:485:in `set_current_admin'
lib/gitlab/session.rb:11:in `with_session'
app/controllers/application_controller.rb:476:in `set_session_storage'
lib/gitlab/i18n.rb:73:in `with_locale'
lib/gitlab/i18n.rb:79:in `with_user_locale'
app/controllers/application_controller.rb:470:in `set_locale'
app/controllers/application_controller.rb:463:in `block in set_current_context'
lib/gitlab/application_context.rb:70:in `block in use'
lib/gitlab/application_context.rb:70:in `use'
lib/gitlab/application_context.rb:27:in `with_context'
app/controllers/application_controller.rb:454:in `set_current_context'
lib/gitlab/metrics/elasticsearch_rack_middleware.rb:16:in `call'
lib/gitlab/middleware/rails_queue_duration.rb:33:in `call'
lib/gitlab/metrics/rack_middleware.rb:16:in `block in call'
lib/gitlab/metrics/transaction.rb:56:in `run'
lib/gitlab/metrics/rack_middleware.rb:16:in `call'
lib/gitlab/request_profiler/middleware.rb:17:in `call'
lib/gitlab/jira/middleware.rb:19:in `call'
lib/gitlab/middleware/go.rb:20:in `call'
lib/gitlab/etag_caching/middleware.rb:21:in `call'
lib/gitlab/middleware/multipart.rb:172:in `call'
lib/gitlab/middleware/read_only/controller.rb:50:in `call'
lib/gitlab/middleware/read_only.rb:18:in `call'
lib/gitlab/middleware/same_site_cookies.rb:27:in `call'
lib/gitlab/middleware/handle_malformed_strings.rb:21:in `call'
lib/gitlab/middleware/basic_health_check.rb:25:in `call'
lib/gitlab/middleware/handle_ip_spoof_attack_error.rb:25:in `call'
lib/gitlab/middleware/request_context.rb:21:in `call'
config/initializers/fix_local_cache_middleware.rb:11:in `call'
lib/gitlab/middleware/rack_multipart_tempfile_factory.rb:21:in `call'
lib/gitlab/metrics/requests_rack_middleware.rb:76:in `call'
lib/gitlab/middleware/release_env.rb:12:in `call'

Output of checks

Results of GitLab environment info

Expand for output related to GitLab environment info

System information
System:         Debian 10
Proxy:          no
Current User:   git
Using RVM:      no
Ruby Version:   2.7.2p137
Gem Version:    3.1.4
Bundler Version:2.1.4
Rake Version:   13.0.3
Redis Version:  6.0.12
Git Version:    2.31.1
Sidekiq Version:5.2.9
Go Version:     unknown

GitLab information
Version:        13.11.3-ee
Revision:       7fde0affe23
Directory:      /opt/gitlab/embedded/service/gitlab-rails
DB Adapter:     PostgreSQL
DB Version:     12.6
URL:            https://removed
HTTP Clone URL: https://removed/some-group/some-project.git
SSH Clone URL:  git@removed:some-group/some-project.git
Elasticsearch:  no
Geo:            no
Using LDAP:     no
Using Omniauth: yes
Omniauth Providers: 

GitLab Shell
Version:        13.17.0
Repository storage paths:
- default:      /var/opt/gitlab/git-data/repositories
GitLab Shell path:              /opt/gitlab/embedded/service/gitlab-shell
Git:            /opt/gitlab/embedded/bin/git

Results of GitLab application Check

Expand for output related to the GitLab application check

Checking GitLab subtasks ...
Checking GitLab Shell ...
GitLab Shell: ... GitLab Shell version >= 13.17.0 ? ... OK (13.17.0)
Running /opt/gitlab/embedded/service/gitlab-shell/bin/check
Internal API available: OK
Redis available via internal API: OK
gitlab-shell self-check successful
Checking GitLab Shell ... Finished
Checking Gitaly ...
Gitaly: ... default ... OK
Checking Gitaly ... Finished
Checking Sidekiq ...
Sidekiq: ... Running? ... yes
Number of Sidekiq processes (cluster/worker) ... 1/1
Checking Sidekiq ... Finished
Checking Incoming Email ...
Incoming Email: ... Reply by email is disabled in config/gitlab.yml
Checking Incoming Email ... Finished
Checking LDAP ...
LDAP: ... LDAP is disabled in config/gitlab.yml
Checking LDAP ... Finished
Checking GitLab App ...
Git configured correctly? ... yes
Database config exists? ... yes
All migrations up? ... yes
Database contains orphaned GroupMembers? ... no
GitLab config exists? ... yes
GitLab config up to date? ... yes
Log directory writable? ... yes
Tmp directory writable? ... yes
Uploads directory exists? ... yes
Uploads directory has correct permissions? ... yes
Uploads directory tmp has correct permissions? ... yes
Init script exists? ... skipped (omnibus-gitlab has no init script)
Init script up-to-date? ... skipped (omnibus-gitlab has no init script)
Projects have namespace: ...
2/1 ... yes
7/3 ... yes
7/4 ... yes
7/5 ... yes
7/6 ... yes
7/7 ... yes
7/8 ... yes
8/9 ... yes
22/10 ... yes
8/11 ... yes
7/12 ... yes
28/13 ... yes
7/15 ... yes
31/16 ... yes
33/17 ... yes
Redis version >= 5.0.0? ... yes
Ruby version >= 2.7.2 ? ... yes (2.7.2)
Git version >= 2.31.0 ? ... yes (2.31.1)
Git user has default SSH configuration? ... yes
Active users: ... 12
Is authorized keys file accessible? ... skipped (authorized keys not enabled)
GitLab configured to store new projects in hashed storage? ... yes
All projects are in hashed storage? ... yes
Elasticsearch version 7.x (6.4 - 6.x deprecated to be removed in 13.8)? ... skipped (elasticsearch is disabled)
Checking GitLab App ... Finished
Checking GitLab subtasks ... Finished

Possible fixes

To be edited by a developer

Additional information

Our Gitlab Instance is running on 13.11.3-ee with free license
If any other information is needed feel free to tell me in this issue