Import BUG (Internal error)

[OuBi3n]

Hi all,
Importing csv file don't work, any ideas ?
My configuration :
Environment:
Redmine version 3.1.1.stable
Ruby version 1.9.3-p194 (2012-04-20) [x86_64-linux]
Rails version 4.2.4
Environment production
Database adapter Mysql2
SCM:
Git 1.7.10.4
Filesystem
Redmine plugins:
csv_import_issues 0.0.2
redmine_importer 1.2.2

tails -f /etc/opt/redmine/log/production.log :
Started POST "/redmine/importer/match" for 10.181.35.80 at 2015-11-09 17:49:55 +0100
Processing by ImporterController#match as HTML
Parameters: {"utf8"=>"â", "authenticity_token"=>"+nz+wZD9QJELh9XxHlJQW1HmVB5sQh5yTRSWQIgxt4vesTe9g/t4IlYaRN9RzroYiikzX09uSeKzz16VB61RLg==", "project_id"=>"5", "file"=>#<ActionDispatch::Http::UploadedFile:0x000000089df4d8 @tempfile=#File:/tmp/RackMultipart20151109-4171-ygl135.csv, @original_filename="import2.csv", @content_type="application/vnd.ms-excel", @headers="Content-Disposition: form-data; name="file"; filename="import2.csv"\r\nContent-Type: application/vnd.ms-excel\r\n">, "encoding"=>"U", "splitter"=>",", "wrapper"=>""", "commit"=>"Upload File"}
Current user: admin (id=1)
Completed 500 Internal Server Error in 218ms (ActiveRecord: 83.4ms)

NoMethodError (undefined method find_or_create_by_user_id' for #<Class:0x00000008c49390>): lib/redmine/sudo_mode.rb:63:insudo_mode'