#60

backend/app/models/post.rb

@@ -14,6 +14,8 @@ class Post < ApplicationRecord
                                       Rails.application.routes.url_helpers.rails_blob_url(
                                           thumbnail, only_path: false) :
                                       nil })
+  rescue
+    super(options).merge(thumbnail: nil)
   end
 
   def resized_thumbnail!