Solved by doing this :
Step 8 - File system permissions¶
NB: Windows users can skip this section.
The user account running the application must have write permission on
the following subdirectories:
files (storage of attachments) log (application log file
production.log) tmp and tmp/pdf (create these ones if not present,
used to generate PDF documents among other things)
public/plugin_assets (assets of plugins) E.g., assuming you run the
application with a redmine user account:
mkdir -p tmp tmp/pdf public/plugin_assets sudo chown -R
redmine:redmine files log tmp public/plugin_assets sudo chmod -R 755
files log tmp public/plugin_assets Step 9 - Test the installation Test
the installation by running WEBrick web server:
with Redmine 1.4.x: ruby script/server webrick -e production with
Redmine 2.x: ruby script/rails server webrick -e production Once
WEBrick has started, point your browser to http://:3000/. You
should now see the application welcome page.
Note: Webrick is not suitable for production use, please only use
webrick for testing that the installation up to this point is
functional. Use one of the many other guides in this wiki to setup
redmine to use either Passenger (aka mod_rails), FCGI or a Rack server
(Unicorn, Thin, Puma, hellip;) to serve up your redmine.