Redmine

Hello,

All was OK with redmine and since one week, we can't use redmine :(

We have this message :
"
Internal error

An error occurred on the page you were trying to access.
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.
"

and in logs :
"
/!\ FAILSAFE /!\ Fri Jan 29 09:11:16 +0100 2016
Status: 500 Internal Server Error
private method `split' called for nil:NilClass
/var/lib/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/request.rb:337:in `query_string'
/var/lib/gems/1.8/gems/rack-1.1.2/lib/rack/request.rb:127:in `GET'
/var/lib/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/request.rb:426:in `query_parameters'
/var/lib/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/request.rb:385:in `parameters'
/var/lib/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/base.rb:1290:in `assign_shortcuts'
/var/lib/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/base.rb:527:in `process_without_filters'
/var/lib/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/filters.rb:606:in `process'
/var/lib/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/rescue.rb:65:in `call_with_exception'
/var/lib/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/dispatcher.rb:90:in `dispatch'
/var/lib/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/dispatcher.rb:121:in `_call'
/var/lib/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/dispatcher.rb:130:in `build_middleware_stack'
/var/lib/gems/1.8/gems/activerecord-2.3.11/lib/active_record/query_cache.rb:29:in `call'
/var/lib/gems/1.8/gems/activerecord-2.3.11/lib/active_record/query_cache.rb:29:in `call'
/var/lib/gems/1.8/gems/activerecord-2.3.11/lib/active_record/connection_adapters/abstract/query_cache.rb:34:in `cache'
/var/lib/gems/1.8/gems/activerecord-2.3.11/lib/active_record/query_cache.rb:9:in `cache'
/var/lib/gems/1.8/gems/activerecord-2.3.11/lib/active_record/query_cache.rb:28:in `call'
/var/lib/gems/1.8/gems/activerecord-2.3.11/lib/active_record/connection_adapters/abstract/connection_pool.rb:361:in `call'
/var/lib/gems/1.8/gems/actionpack-2.3.11/lib/action_controller/string_coercion.rb:25:in `call'
"

the line 337 seems to be
@env['QUERY_STRING'].present? ? @env['QUERY_STRING'] : (@env['REQUEST_URI'].split('?', 2)[1] || '')

What could be wrong please ?

thanks a lot
Best Regards

My system : RAILS_ENV=production script/about

About your application's environment
Ruby version 1.8.7 (i486-linux)
RubyGems version 1.3.7
Rack version 1.1.2
Rails version 2.3.11
Active Record version 2.3.11
Active Resource version 2.3.11
Action Mailer version 2.3.11
Active Support version 2.3.11
Application root /var/www/redmine-1.2
Environment production
Database adapter mysql
Database schema version 20110511000000

About your Redmine plugins
Redmine Gitosis plugin 0.0.5alpha
Issue Importer 0.9