Hey, we’ve been stuck at a very nasty bug as of late that broke our entire website with no seemingly feasible way out of it. We’ve tried everything from rebuilding to removing/adding plugins to no avail. We have a working backup from a couple months ago, but it seems that any attempt to rebuild this with a newer version just straight up breaks the site.
The main message that gets displayed reads:
Oops The software powering this discussion forum encountered an unexpected problem. We apologize for the inconvenience. Detailed information about the error was logged, and an automatic notification generated. We'll take a look at it. No further action is necessary. However, if the error condition persists, you can provide additional detail, including steps to reproduce the error, by posting a discussion topic in the site's feedback category.
This is a generic Discourse error message that yields no actual results when troubleshooting. Checking the logs of our docker, I was able to find this:
Completed 500 Internal Server Error in 152ms (ActiveRecord: 0.0ms | Allocations: 17980) ActionView::Template::Error (undefined method `' for nil:NilClass) lib/svg_sprite/svg_sprite.rb:502:in `block in custom_icons' lib/svg_sprite/svg_sprite.rb:500:in `each' lib/svg_sprite/svg_sprite.rb:500:in `custom_icons' lib/svg_sprite/svg_sprite.rb:275:in `block in all_icons' lib/distributed_cache.rb:25:in `defer_get_set' lib/svg_sprite/svg_sprite.rb:517:in `get_set_cache' lib/svg_sprite/svg_sprite.rb:268:in `all_icons' lib/svg_sprite/svg_sprite.rb:337:in `bundle' lib/svg_sprite/svg_sprite.rb:285:in `block in version' lib/distributed_cache.rb:25:in `defer_get_set' lib/svg_sprite/svg_sprite.rb:517:in `get_set_cache' lib/svg_sprite/svg_sprite.rb:284:in `version' lib/svg_sprite/svg_sprite.rb:290:in `path' app/helpers/application_helper.rb:586:in `client_side_setup_data' app/views/layouts/application.html.erb:61 lib/topic_list_responder.rb:13:in `block (2 levels) in respond_with_list' lib/topic_list_responder.rb:9:in `respond_with_list' app/controllers/list_controller.rb:103:in `block (2 levels) in <class:ListController>' app/controllers/application_controller.rb:387:in `block in with_resolved_locale' app/controllers/application_controller.rb:387:in `with_resolved_locale' lib/middleware/omniauth_bypass_middleware.rb:71:in `call' lib/content_security_policy/middleware.rb:12:in `call' lib/middleware/anonymous_cache.rb:356:in `call' config/initializers/100-quiet_logger.rb:23:in `call' config/initializers/100-silence_logger.rb:31:in `call' lib/middleware/enforce_hostname.rb:23:in `call' lib/middleware/request_tracker.rb:198:in `call'
So, naturally, I thought I could fix the issue by simply implementing a try/catch at line 501 where it errors. This is the method in question:
def self.custom_icons(theme_id) # Automatically register icons in sprites added via themes or plugins icons =  custom_svg_sprites(theme_id).each do |item| begin svg_file = Nokogiri::XML(item[:sprite]) svg_file.css('symbol').each do |sym| icons << sym.attributes['id'].value if sym.attributes['id'].present? end rescue Exception: puts Exception end end icons end
While this does restore functionality to the site, it unfortunately does so by not loading any icons or images on the entire website, so ultimately this doesn’t fix anything.
We’re using the following plugins:
- git clone https://github.com/discourse/docker_manager.git - git clone https://github.com/discourse/discourse-bbcode.git - git clone https://github.com/discourse/discourse-follow.git - git clone https://github.com/discourse/discourse-user-notes.git
From what I recall, we’ve used some plugins such as discourse-follow before they were officially supported, so perhaps sidegrading them broke something in the process.
The original version before the update was 2.8.0.beta2, we are now on 2.9.0.beta1
I’ve tried just about everything I can think of, I wasn’t sure if I should post here because I feel as if this is too generic of a bug for anyone to be able to help, but if someone has any ideas as to what’s causing this, I’d appreciate the assistance.