Hi all,

after migrating openproject data (i.e. SQL dump + files) from 4.0.5 (Debian wheezy) to 5.0.9 (Debian jessie),
images within wiki pages and work packages are not displayed.

This is what I did:

• On 4.0.5 wheezy

  mysqldump --single-transaction --add-drop-table --add-locks --host=localhost --user=openproject --result-file=backup.sql openproject

• On 5.0.9 jessie:

  mysql -uroot -p
  mysql> CREATE DATABASE openproject CHARACTER SET utf8;
  mysql> CREATE USER 'openproject'@'localhost' IDENTIFIED BY 'supersecretpasswd';
  mysql> GRANT ALL PRIVILEGES ON openproject.* TO 'openproject'@'localhost';
  mysql> \q

  mysql -h localhost -p openproject < backup.sql

  apt-get install openproject
  openproject configure # reusing existing database

  scp <old4.0.5>:/var/db/openproject/files/* /var/db/openproject/files/
  chown openproject.openproject /var/db/openproject/files/*

  service openproject restart
  service apache restart

Images are not displayed within wiki pages.
I decided to redo the well known rake tasks:

openproject run rake db:migrate --trace
openproject run rake db:seed --trace
openproject run rake assets:precompile --trace

There are no obvious errors, at least I can’t see them!
Please find the respective logs attached.

Here is a short excerpt from the main log files:

• 4.0.5

  Started GET "/openproject/attachments/386/download" for XXX.XX.XX.XX at 2016-01-19 15:04:14 +0100
  Processing by AttachmentsController#download as HTML
  Parameters: {"id"=>"386"}
  Sent file /var/db/openproject/files/150923142638_gis_overview_small.png (0.1ms)
  Completed 200 OK in 32.1ms (ActiveRecord: 2.2ms)

• 5.0.9

  I, [2016-01-19T15:02:02.616658 #14300] INFO -- : Started GET "/openproject/attachments/386" for XXX.XX.XX.XX at 2016-01-19 15:02:02 +0100
  I, [2016-01-19T15:02:02.618179 #14300] INFO -- : Processing by AttachmentsController#download as HTML
  I, [2016-01-19T15:02:02.618248 #14300] INFO -- : Parameters: {"id"=>"386"}
  I, [2016-01-19T15:02:02.644354 #14300] INFO -- : Completed 500 Internal Server Error in 26ms (ActiveRecord: 1.1ms)
  F, [2016-01-19T15:02:02.646077 #14300] FATAL -- :
  TypeError (no implicit conversion of nil into String):
  app/uploaders/file_uploader.rb:47:in readable?' app/uploaders/file_uploader.rb:47:in readable?'
  app/models/attachment.rb:118:in readable?' app/controllers/attachments_controller.rb:68:in file_readable'
  app/middleware/params_parser_with_exclusion.rb:40:in `call'

Thanks for support!
All the best,

Frank