Redmine

Hello,

To check the defect, i just install REDMINE 5.1.8 stable branch on a server with a new RUBY 3.2.8 install too :

Environment:
Redmine version 5.1.8.stable
Ruby version 3.2.8-p263 (2025-03-26) [x86_64-linux]
Rails version 6.1.7.10
Environment production
Database adapter PostgreSQL
Mailer queue ActiveJob::QueueAdapters::AsyncAdapter
Mailer delivery smtp
Redmine settings:
Redmine theme Default
SCM:
Git 2.39.3
Filesystem
Redmine plugins:
no plugin installed

When i try to add several member in the same time to a projet, REDMINE have an error :

ActiveRecord::RecordNotUnique (PG::UniqueViolation: ERROR: duplicate key value violates unique constraint "members_pkey"
DETAIL: Key (id)=(444) already exists.

If i try one by one : no problem
I think an external librairies who's updated in this new installation make this regression because my production server in REDMINE 5.1.6 works fine.

thanks for your job.