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I have a problem with create new issue

Internal error

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 If you continue to experience problems please contact your Redmine administrator for assistance.

If you are the Redmine administrator, check your log files for details about the error.

App 19317 stderr: Completed 200 OK in 46ms (Views: 21.7ms | ActiveRecord: 9.5ms)
App 19317 stderr: Started GET "/projects/flyctrl" for 192.168.169.1 at 2016-10-07 06:12:34 -0700
App 19317 stderr: Processing by ProjectsController#show as HTML
App 19317 stderr:   Parameters: {"id"=>"flyctrl"}
App 19317 stderr:   Current user: admin (id=1)
App 19317 stderr:   Rendered projects/_members_box.html.erb (0.1ms)
App 19317 stderr:   Rendered projects/_sidebar.html.erb (0.6ms)
App 19317 stderr:   Rendered projects/show.html.erb within layouts/base (5.0ms)
App 19317 stderr: Completed 200 OK in 32ms (Views: 15.4ms | ActiveRecord: 7.6ms)
App 19317 stderr: Started GET "/projects/flyctrl/issues/new" for 192.168.169.1 at 2016-10-07 06:17:05 -0700
App 19317 stderr: Processing by IssuesController#new as HTML
App 19317 stderr:   Parameters: {"project_id"=>"flyctrl"}
App 19317 stderr:   Current user: admin (id=1)
App 19317 stderr:   Rendered issues/_form_custom_fields.html.erb (1.5ms)
App 19317 stderr:   Rendered issues/_attributes.html.erb (7.6ms)
App 19317 stderr:   Rendered issues/_form.html.erb (11.2ms)
App 19317 stderr:   Rendered attachments/_form.html.erb (1.0ms)
App 19317 stderr:   Rendered issues/new.html.erb within layouts/base (17.4ms)
App 19317 stderr: Completed 200 OK in 44ms (Views: 23.9ms | ActiveRecord: 8.7ms)
App 19317 stderr: Started POST "/projects/flyctrl/issues" for 192.168.169.1 at 2016-10-07 06:17:16 -0700
App 19317 stderr: Processing by IssuesController#create as HTML
App 19317 stderr:   Parameters: {"utf8"=>"✓", "authenticity_token"=>"Qh8wfq6/K2w0TRqIjbbi8W1rdLQSgjMHuru4SNduc1IWpYEXjTIq10sIYo7oQFB0giPq7PK26GvO0O9oY6wBgA==", "form_update_triggered_by"=>"", "issue"=>{"is_private"=>"0", "tracker_id"=>"1", "subject"=>"aaaaaaaaaaa", "description"=>"aaaaaaaaaaaa", "status_id"=>"1", "priority_id"=>"2", "assigned_to_id"=>"", "parent_issue_id"=>"", "start_date"=>"2016-10-07", "due_date"=>"2016-10-07", "estimated_hours"=>"", "done_ratio"=>"0"}, "was_default_status"=>"1", "continue"=>"创建并继续", "project_id"=>"flyctrl"}
App 19317 stderr:   Current user: admin (id=1)
App 19317 stderr:   Rendered mailer/_issue.text.erb (1.5ms)
App 19317 stderr:   Rendered mailer/issue_add.text.erb within layouts/mailer (1.8ms)
App 19317 stderr:   Rendered mailer/_issue.html.erb (1.2ms)
App 19317 stderr:   Rendered mailer/issue_add.html.erb within layouts/mailer (1.5ms)
App 19317 stderr: *Completed 500 Internal Server Error in 50ms (ActiveRecord: 17.1ms)*
App 19317 stderr: 
App 19317 stderr: *Errno::ENOENT (No such file or directory - getcwd):*
App 19317 stderr:   config/initializers/10-patches.rb:154:in `deliver'
App 19317 stderr:   app/models/mailer.rb:64:in `block in deliver_issue_add'
App 19317 stderr:   app/models/issue.rb:940:in `each_notification'
App 19317 stderr:   app/models/mailer.rb:63:in `deliver_issue_add'
App 19317 stderr:   app/models/issue.rb:1665:in `send_notification'
App 19317 stderr:   app/models/issue.rb:182:in `create_or_update'
App 19317 stderr:   app/controllers/issues_controller.rb:141:in `create'
App 19317 stderr:   lib/redmine/sudo_mode.rb:63:in `sudo_mode'
App 19317 stderr: