Wiki pages with tags cannot be deleted

[tobenschmidt]

Wiki pages with one or more tags cannot be deleted. The production log shows the following error message:

Started DELETE "/redmine/projects/project-foo/wiki/My_Obsolete_Wiki_Page" for xx.xx.xx.xx at 2018-11-02 10:53:19 +0100
Processing by WikiController#destroy as HTML
  Parameters: {"authenticity_token"=>"foobar", "project_id"=>"project-foo", "id"=>"My_Obsolete_Wiki_Page"}
  Current user: baz (id=x)
Completed 500 Internal Server Error in 48ms (ActiveRecord: 19.8ms)

ActiveRecord::RecordNotDestroyed (Failed to destroy the record):
  app/controllers/wiki_controller.rb:281:in `destroy'
  lib/redmine/sudo_mode.rb:63:in `sudo_mode'

Workaround:

1. Remove all tags from wiki page
2. Save wiki page
3. Delete wiki page

redmine_wiki_extensions: 0.8.1
redmine: 3.4.6
Ruby: 2.3.3
Rails: 4.2.8

[haru]

Thanks. I've fixed this problem.