Adding related issue causes error 422 (authenticity token invalid)

[leoniscsem]

Environment:
  Redmine version                5.1.3.stable
  Ruby version                   3.1.6-p260 (2024-05-29) [x86_64-linux]
  Rails version                  6.1.7.8
  Environment                    production
  Database adapter               PostgreSQL
  Mailer queue                   ActiveJob::QueueAdapters::AsyncAdapter
  Mailer delivery                smtp
Redmine settings:
  Redmine theme                  Purplemine2 (includes JavaScript)
SCM:
  Git                            2.34.1
  Filesystem                     
Redmine plugins:
  additional_tags                3.4.0
  additionals                    3.4.0  # branch stable
  easy_baseline                  2.0
  easy_gantt                     2.0
  easy_gantt_pro                 2.0
  easy_mindmup                   2.0
  easy_wbs                       2.0
  mega_calendar                  2.0tail .0
  redmine_agile                  1.6.9
  redmine_issue_dynamic_edit     0.9.1
  redmine_mentions               0.0.1
  redmine_messenger              1.0.15
  redmine_rt                     1.1.1
  redmine_wiki_text_encloser     0.2.1

When trying to link an issue to another issue the user gets logged out and Redmine throws error 422. I cannot tell if this is caused by my Nginx configuration (see Can't verify CSRF token authenticity) or by the plugin itself. I have manually deleted the plugin from the database and reinstalled it, but the error persists.

production.log

I, [2024-12-19T13:05:02.004725 #568733]  INFO -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c] Started POST "/issues/37/relations" for XXX.XXX.XXX.XXX at 2024-12-19 13:05:02 +0800
I, [2024-12-19T13:05:02.005767 #568733]  INFO -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c] Processing by IssueRelationsController#create as HTML
I, [2024-12-19T13:05:02.005852 #568733]  INFO -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   Parameters: {"utf8"=>"✓", "relation"=>{"relation_type"=>"relates", "issue_to_id"=>"50, ", "delay"=>""}, "commit"=>"Add", "issue_id"=>"37"}
W, [2024-12-19T13:05:02.006057 #568733]  WARN -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c] Can't verify CSRF token authenticity.
E, [2024-12-19T13:05:02.006187 #568733] ERROR -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c] ActionController::InvalidAuthenticityToken: ActionController::InvalidAuthenticityToken
D, [2024-12-19T13:05:02.008610 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   AnonymousUser Load (0.4ms)  SELECT "users".* FROM "users" WHERE "users"."type" = $1 AND "users"."lastname" = $2 LIMIT $3  [["type", "AnonymousUser"], ["lastname", "Anonymous"], ["LIMIT", 1]]
D, [2024-12-19T13:05:02.009800 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   Rendering layout layouts/base.html.erb
D, [2024-12-19T13:05:02.009898 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   Rendering common/error.html.erb within layouts/base
I, [2024-12-19T13:05:02.010214 #568733]  INFO -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   Rendered common/error.html.erb within layouts/base (Duration: 0.2ms | Allocations: 55)
D, [2024-12-19T13:05:02.013458 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   Rendered plugins/redmine_wiki_text_encloser/app/views/wiki_text_encloser/_base.html.erb (Duration: 0.3ms | Allocations: 100)
D, [2024-12-19T13:05:02.014248 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   Rendered plugins/additional_tags/app/views/additional_tags/_html_head.html.slim (Duration: 0.5ms | Allocations: 362)
D, [2024-12-19T13:05:02.014900 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   Rendered plugins/additionals/app/views/additionals/_html_head.html.slim (Duration: 0.4ms | Allocations: 328)
D, [2024-12-19T13:05:02.016679 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   Rendered plugins/additionals/app/views/additionals/_body_top.slim (Duration: 0.1ms | Allocations: 39)
D, [2024-12-19T13:05:02.019534 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   Role Load (0.9ms)  SELECT DISTINCT "roles".* FROM "roles" INNER JOIN "member_roles" ON "member_roles"."role_id" = "roles"."id" INNER JOIN "members" ON "members"."id" = "member_roles"."member_id" INNER JOIN "projects" ON "projects"."id" = "members"."project_id" WHERE (projects.status <> 9) AND "members"."user_id" = 4
D, [2024-12-19T13:05:02.020857 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   GroupAnonymous Load (0.3ms)  SELECT "users".* FROM "users" WHERE "users"."type" = $1 ORDER BY "users"."id" ASC LIMIT $2  [["type", "GroupAnonymous"], ["LIMIT", 1]]
D, [2024-12-19T13:05:02.023503 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   Role Load (1.4ms)  SELECT DISTINCT "roles".* FROM "roles" INNER JOIN "member_roles" ON "member_roles"."role_id" = "roles"."id" INNER JOIN "members" ON "members"."id" = "member_roles"."member_id" INNER JOIN "projects" ON "projects"."id" = "members"."project_id" WHERE (projects.status <> 9 AND projects.is_public = TRUE) AND "members"."user_id" = 2
D, [2024-12-19T13:05:02.024863 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   Role Load (0.3ms)  SELECT "roles".* FROM "roles" WHERE "roles"."builtin" = $1 LIMIT $2  [["builtin", 2], ["LIMIT", 1]]
D, [2024-12-19T13:05:02.026264 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   GroupAnonymous Load (0.4ms)  SELECT "users".* FROM "users" WHERE "users"."type" = $1 ORDER BY id LIMIT $2  [["type", "GroupAnonymous"], ["LIMIT", 1]]
D, [2024-12-19T13:05:02.027331 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]    (0.2ms)  SELECT "users"."id" FROM "users" WHERE "users"."type" = $1 LIMIT $2  [["type", "GroupAnonymous"], ["LIMIT", 1]]
D, [2024-12-19T13:05:02.029098 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]    (0.7ms)  SELECT "members"."user_id", "role_id", "members"."project_id" FROM "members" INNER JOIN "projects" ON "projects"."id" = "members"."project_id" INNER JOIN "member_roles" ON "member_roles"."member_id" = "members"."id" WHERE (projects.status <> 9) AND (members.user_id = 4 OR (projects.is_public = TRUE AND members.user_id = 2))
D, [2024-12-19T13:05:02.031150 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   EnabledModule Exists? (0.9ms)  SELECT 1 AS one FROM "enabled_modules" WHERE "enabled_modules"."project_id" IN (SELECT "projects"."id" FROM "projects" WHERE (((projects.status <> 9 AND projects.status <> 10) AND ((projects.is_public = TRUE AND projects.id NOT IN (SELECT project_id FROM members WHERE user_id IN (4,2))))))) AND "enabled_modules"."name" = $1 LIMIT $2  [["name", "issue_tracking"], ["LIMIT", 1]]
D, [2024-12-19T13:05:02.032007 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   CACHE GroupAnonymous Load (0.0ms)  SELECT "users".* FROM "users" WHERE "users"."type" = $1 ORDER BY "users"."id" ASC LIMIT $2  [["type", "GroupAnonymous"], ["LIMIT", 1]]
D, [2024-12-19T13:05:02.033040 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   CACHE Role Load (0.0ms)  SELECT DISTINCT "roles".* FROM "roles" INNER JOIN "member_roles" ON "member_roles"."role_id" = "roles"."id" INNER JOIN "members" ON "members"."id" = "member_roles"."member_id" INNER JOIN "projects" ON "projects"."id" = "members"."project_id" WHERE (projects.status <> 9 AND projects.is_public = TRUE) AND "members"."user_id" = 2
D, [2024-12-19T13:05:02.033937 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   CACHE GroupAnonymous Load (0.0ms)  SELECT "users".* FROM "users" WHERE "users"."type" = $1 ORDER BY id LIMIT $2  [["type", "GroupAnonymous"], ["LIMIT", 1]]
D, [2024-12-19T13:05:02.035169 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   EnabledModule Exists? (0.5ms)  SELECT 1 AS one FROM "enabled_modules" WHERE "enabled_modules"."project_id" IN (SELECT "projects"."id" FROM "projects" WHERE (((projects.status <> 9 AND projects.status <> 10) AND ((projects.is_public = TRUE AND projects.id NOT IN (SELECT project_id FROM members WHERE user_id IN (4,2))))))) AND "enabled_modules"."name" = $1 LIMIT $2  [["name", "time_tracking"], ["LIMIT", 1]]
D, [2024-12-19T13:05:02.035821 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   CACHE GroupAnonymous Load (0.0ms)  SELECT "users".* FROM "users" WHERE "users"."type" = $1 ORDER BY "users"."id" ASC LIMIT $2  [["type", "GroupAnonymous"], ["LIMIT", 1]]
D, [2024-12-19T13:05:02.036555 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   CACHE Role Load (0.0ms)  SELECT DISTINCT "roles".* FROM "roles" INNER JOIN "member_roles" ON "member_roles"."role_id" = "roles"."id" INNER JOIN "members" ON "members"."id" = "member_roles"."member_id" INNER JOIN "projects" ON "projects"."id" = "members"."project_id" WHERE (projects.status <> 9 AND projects.is_public = TRUE) AND "members"."user_id" = 2
D, [2024-12-19T13:05:02.037052 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   CACHE GroupAnonymous Load (0.0ms)  SELECT "users".* FROM "users" WHERE "users"."type" = $1 ORDER BY id LIMIT $2  [["type", "GroupAnonymous"], ["LIMIT", 1]]
D, [2024-12-19T13:05:02.038239 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   EnabledModule Exists? (0.5ms)  SELECT 1 AS one FROM "enabled_modules" WHERE "enabled_modules"."project_id" IN (SELECT "projects"."id" FROM "projects" WHERE (((projects.status <> 9 AND projects.status <> 10) AND ((projects.is_public = TRUE AND projects.id NOT IN (SELECT project_id FROM members WHERE user_id IN (4,2))))))) AND "enabled_modules"."name" = $1 LIMIT $2  [["name", "gantt"], ["LIMIT", 1]]
D, [2024-12-19T13:05:02.038850 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   CACHE GroupAnonymous Load (0.0ms)  SELECT "users".* FROM "users" WHERE "users"."type" = $1 ORDER BY "users"."id" ASC LIMIT $2  [["type", "GroupAnonymous"], ["LIMIT", 1]]
D, [2024-12-19T13:05:02.039607 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   CACHE Role Load (0.0ms)  SELECT DISTINCT "roles".* FROM "roles" INNER JOIN "member_roles" ON "member_roles"."role_id" = "roles"."id" INNER JOIN "members" ON "members"."id" = "member_roles"."member_id" INNER JOIN "projects" ON "projects"."id" = "members"."project_id" WHERE (projects.status <> 9 AND projects.is_public = TRUE) AND "members"."user_id" = 2
D, [2024-12-19T13:05:02.040127 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   CACHE GroupAnonymous Load (0.0ms)  SELECT "users".* FROM "users" WHERE "users"."type" = $1 ORDER BY id LIMIT $2  [["type", "GroupAnonymous"], ["LIMIT", 1]]
D, [2024-12-19T13:05:02.041543 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   EnabledModule Exists? (0.5ms)  SELECT 1 AS one FROM "enabled_modules" WHERE "enabled_modules"."project_id" IN (SELECT "projects"."id" FROM "projects" WHERE (((projects.status <> 9 AND projects.status <> 10) AND ((projects.is_public = TRUE AND projects.id NOT IN (SELECT project_id FROM members WHERE user_id IN (4,2))))))) AND "enabled_modules"."name" = $1 LIMIT $2  [["name", "calendar"], ["LIMIT", 1]]
D, [2024-12-19T13:05:02.042124 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   CACHE GroupAnonymous Load (0.0ms)  SELECT "users".* FROM "users" WHERE "users"."type" = $1 ORDER BY "users"."id" ASC LIMIT $2  [["type", "GroupAnonymous"], ["LIMIT", 1]]
D, [2024-12-19T13:05:02.042820 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   CACHE Role Load (0.0ms)  SELECT DISTINCT "roles".* FROM "roles" INNER JOIN "member_roles" ON "member_roles"."role_id" = "roles"."id" INNER JOIN "members" ON "members"."id" = "member_roles"."member_id" INNER JOIN "projects" ON "projects"."id" = "members"."project_id" WHERE (projects.status <> 9 AND projects.is_public = TRUE) AND "members"."user_id" = 2
D, [2024-12-19T13:05:02.043309 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   CACHE GroupAnonymous Load (0.0ms)  SELECT "users".* FROM "users" WHERE "users"."type" = $1 ORDER BY id LIMIT $2  [["type", "GroupAnonymous"], ["LIMIT", 1]]
D, [2024-12-19T13:05:02.044534 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   EnabledModule Exists? (0.5ms)  SELECT 1 AS one FROM "enabled_modules" WHERE "enabled_modules"."project_id" IN (SELECT "projects"."id" FROM "projects" WHERE (((projects.status <> 9 AND projects.status <> 10) AND ((projects.is_public = TRUE AND projects.id NOT IN (SELECT project_id FROM members WHERE user_id IN (4,2))))))) AND "enabled_modules"."name" = $1 LIMIT $2  [["name", "news"], ["LIMIT", 1]]
D, [2024-12-19T13:05:02.045096 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   CACHE GroupAnonymous Load (0.0ms)  SELECT "users".* FROM "users" WHERE "users"."type" = $1 ORDER BY "users"."id" ASC LIMIT $2  [["type", "GroupAnonymous"], ["LIMIT", 1]]
D, [2024-12-19T13:05:02.045792 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   CACHE Role Load (0.0ms)  SELECT DISTINCT "roles".* FROM "roles" INNER JOIN "member_roles" ON "member_roles"."role_id" = "roles"."id" INNER JOIN "members" ON "members"."id" = "member_roles"."member_id" INNER JOIN "projects" ON "projects"."id" = "members"."project_id" WHERE (projects.status <> 9 AND projects.is_public = TRUE) AND "members"."user_id" = 2
D, [2024-12-19T13:05:02.047378 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   Rendered plugins/additional_tags/app/views/additional_tags/_body_bottom.html.slim (Duration: 0.5ms | Allocations: 391)
D, [2024-12-19T13:05:02.047758 #568733] DEBUG -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   Rendered plugins/additionals/app/views/additionals/_body_bottom.html.slim (Duration: 0.1ms | Allocations: 47)
I, [2024-12-19T13:05:02.048675 #568733]  INFO -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c]   Rendered layout layouts/base.html.erb (Duration: 38.8ms | Allocations: 11979)
I, [2024-12-19T13:05:02.048886 #568733]  INFO -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c] Filter chain halted as :verify_authenticity_token rendered or redirected
I, [2024-12-19T13:05:02.049051 #568733]  INFO -- : [c73ffd36-3755-48ed-adf3-3fb16c53678c] Completed 422 Unprocessable Entity in 43ms (Views: 32.0ms | ActiveRecord: 7.8ms | Allocations: 12947)

Any other log I can provide to find the issue cause? Thank you.