Redmine

Hi,

I recently updated my SVN from 1.6 to 1.8, so i upgraded my OS from debian Wheezy to Jessie, Apache2 was updated too (2.2 to 2.4). I also updated ruby and redmine gems.
I made some changes in configuration to make it compatible but i still have a minor issue with Redmine.
The Redmine website works, the SVN repository works but when i try to access Repository tab, i got (in french)

404 - The entry or revision was not found in the repository.

The overall website is using HTTPS through a valid certificate.

I tried
svn list --username MyUser --xml "http://domain.com/svn/myrepos"@HEAD
That was a success (for HTTP & HTTPS).

I tried using my browser, that was also a success for HTTP & HTTPS.

So, I am unable to find why I am getting this error, I read many posts about this topic without any success.

About environment:

root@redmine /h/s/redmine-3.0.0# bin/about

sh: 1: darcs: not found
sh: 1: hg: not found
sh: 1: cvs: not found
sh: 1: bzr: not found
Environment:
  Redmine version                3.0.0.stable
  Ruby version                   2.1.5-p273 (2014-11-13) [x86_64-linux-gnu]
  Rails version                  4.2.0
  Environment                    production
  Database adapter               Mysql2
SCM:
  Subversion                     1.8.10
  Git                            2.1.4
  Filesystem
Redmine plugins:
  no plugin installed