Redmine

Hey Redmine Forum,

I have the problem that the redmine website isn't working anymore after I updated the system as well as installed an extension.
Now the App wont start/work with Apache/passenger anymore, and I'm afraid I broke something in the system. I can run Redmine (with extensions) with the webrick webserver manually (ruby bin/rails server webrick -e production -b 0.0.0.0), so I guess redmine installation and database is ok.

The Error I get is this (in apache/error.log):

[ 2016-06-06 09:53:24.8569 23542/7f473cf29700 age/Cor/Con/CheckoutSession.cpp:285 ]: [Client 2-8] Cannot checkout session because a spawning error occurred. The identifier of the error is 36d94ced. Please see earlier logs for details about the error.
App 31570 stdout: 
App 31570 stdout: 
[ 2016-06-06 10:29:51.8909 23542/7f4743d5d700 age/Cor/App/Implementation.cpp:304 ]: Could not spawn process for application /opt/redmine/redmine: An error occurred while starting up the preloader.
  Error ID: 563b1d01
  Error details saved to: /tmp/passenger-error-7WulCa.html
  Message from application: cannot load such file -- bundler/setup (LoadError)
  /usr/local/lib/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require'
  /usr/local/lib/site_ruby/2.1.0/rubygems/core_ext/kernel_require.rb:55:in `require'
  /var/lib/gems/2.1.0/gems/passenger-5.0.28/src/ruby_supportlib/phusion_passenger/loader_shared_helpers.rb:430:in `activate_gem'
  /var/lib/gems/2.1.0/gems/passenger-5.0.28/src/ruby_supportlib/phusion_passenger/loader_shared_helpers.rb:297:in `block in run_load_path_setup_code'
  /var/lib/gems/2.1.0/gems/passenger-5.0.28/src/ruby_supportlib/phusion_passenger/loader_shared_helpers.rb:435:in `running_bundler'
  /var/lib/gems/2.1.0/gems/passenger-5.0.28/src/ruby_supportlib/phusion_passenger/loader_shared_helpers.rb:296:in `run_load_path_setup_code'
  /var/lib/gems/2.1.0/gems/passenger-5.0.28/src/helper-scripts/rack-preloader.rb:100:in `preload_app'
  /var/lib/gems/2.1.0/gems/passenger-5.0.28/src/helper-scripts/rack-preloader.rb:156:in `<module:App>'
  /var/lib/gems/2.1.0/gems/passenger-5.0.28/src/helper-scripts/rack-preloader.rb:30:in `<module:PhusionPassenger>'
  /var/lib/gems/2.1.0/gems/passenger-5.0.28/src/helper-scripts/rack-preloader.rb:29:in `<main>'

My Installation:

• I'm running Ubuntu 14.04 64 Bit (4.2.0-36-generic)
• MySql: 5.5.49
• PHP: 5.5.9
• passenger 5.0.28-1
  Redmine is started as a user.
  Config Files:
  passenger.conf
  

  <IfModule mod_passenger.c>
    PassengerRoot /var/lib/gems/2.1.0/gems/passenger-5.0.28
    PassengerDefaultRuby /usr/bin/ruby2.1
    PassengerDefaultUser www-data
    PassengerUserSwitching on
    PassengerUser redmine
    PassengerGroup redmine
  </IfModule>
  
  # passenger.load (split in ubuntu)
  LoadModule passenger_module /var/lib/gems/2.1.0/gems/passenger-5.0.28/buildout/apache2/mod_passenger.so
  

My guess is that something is wrong here already, but I can't figure out what's going on.

rails --version
Rails 4.2.3

Redmine version: 3.0.4

Webserver: Apacher + passenger

redmine@Ubuntu-1404-trusty-64-minimal:~/redmine$ RAILS_ENV=production 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                3.0.4.stable
  Ruby version                   2.1.8-p440 (2015-12-16) [x86_64-linux-gnu]
  Rails version                  4.2.3
  Environment                    production
  Database adapter               Mysql2
SCM:
  Subversion                     1.8.8
  Git                            1.9.1
  Filesystem                     
Redmine plugins:
  easy_wbs                       2016-0.0
  redmine_contacts               4.0.4
  redmine_gc_sync                1.0.0

The problem arises the moment a user tries to access redmine. Apache starts, systems seems fine. I am very thankful for any kind of help/tip. Also if more information is needed feel free to ask!

Thanks in advance!

EDIT: I can't reply to this anymore somehow. Probably shouldn't try to post HTML code -.-

Here is the log file though: [[http://pastebin.com/czWMDV3F]]
I cant really make sense of that, but maybe you all can figure something out!