Software » Web » Redmine plugins

Hi,

i'am unable to add anything into the sprint , in specific project, in leading to the following blocking error

in author project , i can add anything into the sprint ,

this is my environement :

Environment:
  Redmine version                3.4.3.stable.17134
  Ruby version                   2.2.5-p319 (2016-04-26) [x86_64-linux]
  Rails version                  4.2.8
  Environment                    production
  Database adapter               Mysql2
SCM:
  Subversion                     1.7.14
  Git                            1.8.3.1
  Filesystem                     
Redmine plugins:
  additionals                    2.0.20
  clipboard_image_paste          1.12
  computed_custom_field          1.0.6
  redhopper                      1.0.11
  redmine_agile                  1.4.12
  redmine_banner                 0.1.2
  redmine_base_deface            0.0.1
  redmine_dmsf                   1.6.0
  redmine_drawio                 0.8.3
  redmine_issue_badge            0.0.6
  redmine_issue_favicon          0.0.3
  redmine_ldap_sync              2.1.1.devel
  redmine_logs                   0.1.1
  redmine_maintenance_mode       2.2.0
  redmine_mentions               0.0.1
  redmine_stats                  0.0.3
  redmine_wktime                 3.3.2
  scrum                          0.18.0
  sidebar_hide                   0.0.8

this is the log file :

App 12130 stderr: Started POST "/scrum/67/create_pbi" for 10.10.10.11 at 2019-09-11 12:31:37 +0100
App 12130 stderr: Processing by ScrumController#create_pbi as JS
App 12130 stderr: Parameters: {"utf8"=>"✓", "back_url"=>"https://10.10.10.11/product_backlog/67", "issue"=>{"tracker_id"=>"5", "sprint_id"=>"67", "subject"=>"ssasa", "status_id"=>"1", "priority_id"=>"2", "description"=>""}, "create_and_continue"=>"Créer et continuer", "sprint_id"=>"67"}
App 12130 stderr: Current user: ndommangala (id=41)
App 12130 stderr: Exception: #<NoMethodError: undefined method `>' for nil:NilClass>
App 12130 stderr: Rendered plugins/scrum/app/views/scrum/create_pbi.js.erb (1.1ms)
App 12130 stderr: Completed 200 OK in 81ms (Views: 2.2ms | ActiveRecord: 12.8ms)