Redmine

Hi Everyone,

We've been experiencing problems when attempting to copy tasks between projects. We receive a http error 409 "This page isn't working right now" when we attempt to copy multiple tasks from one project to another, but copying a single task works fine. The following steps were taken to produce the error:

- Opened template project > Issues > 5D WBS
- Selected multiple tasks
- Right clicked and copied
- Select project from drop down list (no other changes applied) > Copy and follow
- Receive error 409

Any assistance would be appreciated, thanks!

Environment:
Redmine version 5.0.3.stable
Ruby version 2.6.10-p210 (2022-04-12) [x64-mingw32]
Rails version 6.1.7
Environment production
Database adapter Mysql2
Mailer queue ActiveJob::QueueAdapters::AsyncAdapter
Mailer delivery smtp
Redmine settings:
Redmine theme Vertech (includes JavaScript)
SCM:
Git 2.38.0
Filesystem
Redmine plugins:
redmine_checklists 3.1.21
redmine_x_assets 2.1.2
redmine_x_gantt 2.1.2
redmine_x_project_templates 1.1.0