# 500 error at old URL for numeric tag (Google crawl fail)

**URL:** https://meta.discourse.org/t/500-error-at-old-url-for-numeric-tag-google-crawl-fail/399784
**Category:** UX
**Tags:** tags, fixed
**Created:** [April 2, 2026, 11:08am UTC](https://meta.discourse.org/t/500-error-at-old-url-for-numeric-tag-google-crawl-fail/399784 "2026-04-02T11:08:05Z")
**Posts on this page:** 1
**Showing post:** 2

<div class="post-metadata">

### Author: ![supermathie](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/supermathie/32/507518_2.png) [@supermathie](https://meta.discourse.org/u/supermathie)
#### Post date: [April 2, 2026, 2:17pm UTC](https://meta.discourse.org/t/500-error-at-old-url-for-numeric-tag-google-crawl-fail/399784/2 "2026-04-02T14:17:50Z")

</div>

Yeah, that’s not pretty:

 ![image](https://global.discourse-cdn.com/meta/original/4X/7/f/2/7f29d68228e5bffb694e2ac5384169ae7df47d00.png)

```plaintext
ActionView::Template::Error (No route matches {action: "tag_feed", controller: "tags", tag_id: "9999"})
  app/views/list/list.erb:136
  app/views/list/list.erb:134
  lib/topic_list_responder.rb:16:in 'block (2 levels) in TopicListResponder#respond_with_list'
  lib/topic_list_responder.rb:7:in 'TopicListResponder#respond_with_list'
  app/controllers/tags_controller.rb:223:in 'block (2 levels) in <class:TagsController>'
  app/controllers/tags_controller.rb:229:in 'TagsController#show'
  app/controllers/application_controller.rb:447:in 'block in ApplicationController#with_resolved_locale'
  app/controllers/application_controller.rb:447:in 'ApplicationController#with_resolved_locale'
  app/controllers/application_controller.rb:1098:in 'ApplicationController#ensure_dont_cache_page'
  lib/middleware/omniauth_bypass_middleware.rb:35:in 'Middleware::OmniauthBypassMiddleware#call'
  …

```

We should fix that error; we also might be able to fallback to looking for an all-numeric tag name if the tag id isn’t found.

> [@Ed\_S](#):
>
> I’m guessing that some time previously that was a valid way to refer to the tag.

Wayback first noticed that tag appearing on [2025-05-13](https://web.archive.org/web/20250513141544/https://retrocomputingforum.com/t/adventures-with-the-6809-and-6309/2795) and its url was `https://retrocomputingforum.com/tag/6309` which [worked at the time](https://web.archive.org/web/20250422055016/https://retrocomputingforum.com/tag/6309) and up until [2025-12-16](https://web.archive.org/web/20251216172310/https://retrocomputingforum.com/tag/6309).

 ![image](https://global.discourse-cdn.com/meta/original/4X/c/e/0/ce0a6cb13b72ac1ac9e9749deb48b5b59b439f5b.png)

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