Catch Paperclip processing failures (fixes #6378) (#7439)

app/models/concerns/remotable.rb

@@ -41,6 +41,9 @@ module Remotable
         rescue HTTP::TimeoutError, HTTP::ConnectionError, OpenSSL::SSL::SSLError, Paperclip::Errors::NotIdentifiedByImageMagickError, Addressable::URI::InvalidURIError, Mastodon::HostValidationError, Mastodon::LengthValidationError => e
           Rails.logger.debug "Error fetching remote #{attachment_name}: #{e}"
           nil
+        rescue Paperclip::Error => e
+          Rails.logger.debug "Error processing remote #{attachment_name}: #{e}"
+          nil
         end
       end