ActionController::UnknownFormat (ActionController::UnknownFormat)

[ANovitsky]

Hi,

REST API broken after install the plugin. Please fix it.

If I try download attachments via REST API,

Example
/redmine/attachments/20314.json?key=[key]

I got error in logs:
ActionController::UnknownFormat (ActionController::UnknownFormat):
plugins/redmine_preview_pdf/lib/redmine_preview_pdf/patches/attachments_controller_patch.rb:70:in `show_with_pdf'

I thinking you need add condition for API. Like this format.api

[nanego]

I encountered the same issue, so I added a fix in this Pull Request: #2