Begin of the insertionOriginally detected on AppSignalEnd of the insertion Begin of the deletion ### Before filing a reportEnd of the deletion

Begin of the deletion _Before you file a report, please ensure you are running the latest version of OpenProject and_ 
_have searched for similar bug reports._

End of the deletion ### Steps to reproduce

Begin of the deletion _Please write down the steps to reproduce. Try to write down all necessary preconditions (what permissions do you have, are other users involved?). Example:_

End of the deletion 1. Begin of the insertionCreate three work packages:

1. End of the insertion Begin of the deletion Login asEnd of the deletion a Begin of the insertionpredecessor and a successor following each other

End of the insertion Begin of the deletion user with permissions to manage members in project A

End of the deletion 2. Begin of the insertiona predecessor child

End of the insertion Begin of the deletion Go to the members page

End of the deletion 3. Begin of the insertionpredecessor is in automatic scheduling mode, because it's a parent

End of the insertion Begin of the deletion Click on "Add new member"

End of the deletion 4. Begin of the insertionsuccessor is in automatic scheduling mode, because it's a successor

2. FromEnd of the insertion Begin of the deletion TypeEnd of the deletion the Begin of the insertionwork packages list set successor as the parent of predecessor

1. Do it by reordering work packages to have successor listed first and predecessor listed second, right-clicking predecessor and selecting "Indent hierarchy"


See attached screen recording for reproduction steps.

End of the insertion Begin of the deletion following string: "foo@example.org"


End of the deletion ### What is the buggy behavior?

Begin of the deletion _Please describe the bug in as much detail as possible. Example:_

End of the deletion * Begin of the insertionIt fails withEnd of the insertion Begin of the deletion The button to inviteEnd of the deletion a Begin of the insertion500 errorEnd of the insertion Begin of the deletion member did not workEnd of the deletion

* Begin of the insertionInternally, it produced a SystemStackError because ofEnd of the insertion Begin of the deletion There wasEnd of the deletion an Begin of the insertionendless recursive call.End of the insertion Begin of the deletion error notification shown with the message "XYZ"End of the deletion


Begin of the insertionNote: it fails only because the predecessor has a child. Without the child, it does not produce a 500 but displays "Parent A work package cannot be linked to one of its subtasks"

End of the insertion ### What is the expected behavior?

Begin of the deletion _Describe how the application should behave like. Example:_

End of the deletion 1. Begin of the insertionItEnd of the insertion Begin of the deletion The applicationEnd of the deletion should Begin of the insertiondisplayEnd of the insertion Begin of the deletion inviteEnd of the deletion the Begin of the insertionsame error as whenEnd of the insertion Begin of the deletion new user withEnd of the deletion the Begin of the insertionpredecessor has no children: "Parent A work package cannot be linkedEnd of the insertion Begin of the deletion selected role

2. An email should have been sentEnd of the deletion to Begin of the insertionone of its subtasks"

1. (The error message is not clear at all, but that's another topic)


End of the insertion Begin of the deletion that user


End of the deletion ### Begin of the insertionDetails from AppSignalEnd of the insertion Begin of the deletion Important noteEnd of the deletion

Begin of the insertion* **SystemStackError**: `stack level too deep` at `app/services/work_packages/schedule_dependency/dependency_graph.rb:66`

* PATCH::API::V3::WorkPackages::WorkPackagesAPI#/work\_packages/:id/

* Core version 71579a79fc1d0344cbd3807df3ec7213f95b289f (16.1.0 tag)

* parameters: 
{
 "\_links": {
   "parent": {
     "href": "/api/v3/work\_packages/565"
   }
 },
 "lockVersion": 17
}


End of the insertion Begin of the deletion _Please note that unless you are a contributor to OpenProject, you can no longer edit this bug report after saving. You can still add new comments, new images and upload attachments though, but updating description or modifying fields will not be possible after saving. Please make sure that all necessary information and attachments are added, and the following attributes are set:_

End of the deletion ### **Logs**

Begin of the insertion[https://appsignal.com/openproject-gmbh/sites/681379ae55b0b20ed3735994/exceptions/incidents/708](https://appsignal.com/openproject-gmbh/sites/681379ae55b0b20ed3735994/exceptions/incidents/708)

End of the insertion [https://appsignal.com/openproject-gmbh/sites/681379ae55b0b20ed3735994/exceptions/incidents/709](https://appsignal.com/openproject-gmbh/sites/681379ae55b0b20ed3735994/exceptions/incidents/709)

```text
app/services/work_packages/schedule_dependency/dependency_graph.rb:66 Enumerable#flat_map
app/services/work_packages/schedule_dependency/dependency_graph.rb:66 WorkPackages::ScheduleDependency::DependencyGraph#full_dependencies_of
app/services/work_packages/schedule_dependency/dependency_graph.rb:66 block in WorkPackages::ScheduleDependency::DependencyGraph#full_dependencies_of
app/services/work_packages/schedule_dependency/dependency_graph.rb:66 Array#each
… 464 times more ^^
app/services/work_packages/schedule_dependency/dependency_graph.rb:66 Enumerable#flat_map
app/services/work_packages/schedule_dependency/dependency_graph.rb:66 WorkPackages::ScheduleDependency::DependencyGraph#full_dependencies_of
app/services/work_packages/schedule_dependency/dependency_graph.rb:57 WorkPackages::ScheduleDependency::DependencyGraph#depends_on?
app/services/work_packages/schedule_dependency/dependency_graph.rb:41 block (2 levels) in WorkPackages::ScheduleDependency::DependencyGraph#schedule_order
app/services/work_packages/schedule_dependency/dependency_graph.rb:40 Array#rindex
app/services/work_packages/schedule_dependency/dependency_graph.rb:40 block in WorkPackages::ScheduleDependency::DependencyGraph#schedule_order
app/services/work_packages/schedule_dependency/dependency_graph.rb:38 Array#each
app/services/work_packages/schedule_dependency/dependency_graph.rb:38 WorkPackages::ScheduleDependency::DependencyGraph#schedule_order
app/services/work_packages/schedule_dependency.rb:61 WorkPackages::ScheduleDependency#in_schedule_order
app/services/work_packages/set_schedule_service.rb:85 WorkPackages::SetScheduleService#schedule_following
app/services/work_packages/set_schedule_service.rb:43 WorkPackages::SetScheduleService#call
app/services/work_packages/set_attributes_service.rb:292 WorkPackages::SetAttributesService#update_dates_from_rescheduled_children
app/services/work_packages/set_attributes_service.rb:275 WorkPackages::SetAttributesService#update_dates
app/services/work_packages/set_attributes_service.rb:70 WorkPackages::SetAttributesService#set_calculated_attributes
app/services/work_packages/set_attributes_service.rb:44 block in WorkPackages::SetAttributesService#set_attributes
lib/open_project/changed_by_system.rb:87 OpenProject::ChangedBySystem#change_by_system
app/services/work_packages/set_attributes_service.rb:43 WorkPackages::SetAttributesService#set_attributes
modules/backlogs/lib/open_project/backlogs/patches/set_attributes_service_patch.rb:36 OpenProject::Backlogs::Patches::SetAttributesServicePatch::InstanceMethods#set_attributes
app/services/base_services/set_attributes.rb:44 BaseServices::SetAttributes#perform
app/services/base_services/base_callable.rb:42 block in BaseServices::BaseCallable#call
app/services/base_services/base_callable.rb:70 BaseServices::BaseCallable#assign_state
app/services/base_services/base_callable.rb:41 BaseServices::BaseCallable#call
app/services/base_services/write.rb:60 BaseServices::Write#set_attributes
app/services/attachments/replace_attachments.rb:37 WorkPackages::UpdateService#set_attributes
app/services/base_services/write.rb:51 BaseServices::Write#before_perform
app/services/base_services/base_contracted.rb:61 block in BaseServices::BaseContracted#perform
app/models/journal/notification_configuration.rb:62 Journal::NotificationConfiguration.with_first
app/models/journal/notification_configuration.rb:45 Journal::NotificationConfiguration.with
app/services/shared/service_context.rb:67 block in Shared::ServiceContext#without_context_transaction
lib/open_project/locale_helper.rb:36 OpenProject::LocaleHelper.with_locale_for
app/models/user.rb:538 User.execute_as
app/services/shared/service_context.rb:66 Shared::ServiceContext#without_context_transaction
app/services/shared/service_context.rb:45 block in Shared::ServiceContext#in_mutex_context
lib/open_project/mutex.rb:71 block in OpenProject::Mutex.with_advisory_lock
lib/open_project/mutex.rb:69 OpenProject::Mutex.with_advisory_lock
vendor/plugins/openproject-multitenancy/app/extenders/lib/open_project/namespaced_advisory_lock_names.rb:4 Multitenancy::NamespacedAdvisoryLockNames#with_advisory_lock
lib/open_project/mutex.rb:63 block in OpenProject::Mutex.with_advisory_lock_transaction
lib/open_project/mutex.rb:62 OpenProject::Mutex.with_advisory_lock_transaction
app/services/shared/service_context.rb:44 Shared::ServiceContext#in_mutex_context
app/services/shared/service_context.rb:35 Shared::ServiceContext#in_context
app/services/base_services/base_contracted.rb:54 BaseServices::BaseContracted#service_context
app/services/base_services/base_contracted.rb:59 BaseServices::BaseContracted#perform
app/services/base_services/base_callable.rb:42 block in BaseServices::BaseCallable#call
app/services/base_services/base_callable.rb:70 BaseServices::BaseCallable#assign_state
app/services/base_services/base_callable.rb:41 BaseServices::BaseCallable#call
lib/api/utilities/endpoints/bodied.rb:117 API::Utilities::Endpoints::Bodied#process
lib/api/utilities/endpoints/bodied.rb:90 block in mount
vendor/plugins/openproject-multitenancy/lib/multitenancy/elevators/mapped_domain_elevator.rb:106 block in Multitenancy::Elevators::MappedDomainElevator#call_tenant
vendor/plugins/openproject-multitenancy/lib/multitenancy/elevators/mapped_domain_elevator.rb:103 Multitenancy::Elevators::MappedDomainElevator#call_tenant
vendor/plugins/openproject-multitenancy/lib/multitenancy/elevators/mapped_domain_elevator.rb:69 Multitenancy::Elevators::MappedDomainElevator#try_tenant
vendor/plugins/openproject-multitenancy/lib/multitenancy/elevators/mapped_domain_elevator.rb:39 Multitenancy::Elevators::MappedDomainElevator#call
```

### Screenshots and other files

Begin of the insertionScreen recording reproducingEnd of the insertion Begin of the deletion _If you have screenshots ofEnd of the deletion the Begin of the insertionissue attached toEnd of the insertion Begin of the deletion application's bug behavior or other relevant files, please drag them intoEnd of the deletion this Begin of the insertionbug.End of the insertion Begin of the deletion place or attach them using the "Files" section._End of the deletion

### Environment information

Begin of the deletion _Please check and fill out the following details to help us identify in what versions and distributions of OpenProject the error occurs_

End of the deletion **OpenProject Begin of the deletion installation type**

* Hosted cloud edition

* Packaged installation

* What distribution?

* Docker All-in-one container

* Docker-compose installation

* Other (please specify)


**OpenProjectEnd of the deletion version**

Begin of the insertion16.1.0End of the insertion Begin of the deletion _If you're not running on the cloud edition, please specify theEnd of the deletion version Begin of the insertiononEnd of the insertion Begin of the deletion ofEnd of the deletion OpenProject Begin of the insertionCloudEnd of the insertion Begin of the deletion you're running. Example: v12.1.5_

**Browser**

* [ ] Chrome
* [ ] Firefox
* [ ] Safari
* [ ] Mobile Safari
* [ ] Other (please specify)

**Operating System**

* [ ] Windows
* [ ] Mac OS X
* [ ] Mobile iOS
* [ ] Mobile Android
* [ ] Linux (please specify distro)
* [ ] Chrome OS
* [ ] Other (please specify)

**Language**

_Please specify the browser language and the language of the OpenProject user for which the bug occurred._End of the deletion