[Fix #2697] When file does not exist on openstack do not crash

app/uploaders/base_uploader.rb

@@ -2,4 +2,12 @@ class BaseUploader < CarrierWave::Uploader::Base
   def cache_dir
     Rails.application.secrets.carrierwave[:cache_dir]
   end
+
+  # https://github.com/carrierwaveuploader/carrierwave/wiki/how-to:-silently-ignore-missing-files-on-destroy-or-overwrite
+  def remove!
+    begin
+      super
+    rescue Fog::Storage::OpenStack::NotFound
+    end
+  end
 end