404 on CSS file

I just updated to 8.12 via the omnibus package, and now gitlab is returning a 404 loading /assets/application-1840f43fd20c30180b0599c214ddae7e6939d50933870904ebd0e81704658333.css, which is breaking the page layout.

The file exists:

# ls -l /opt/gitlab/embedded/service/gitlab-rails/public/assets/application-1840f43fd20c30180b0599c214ddae7e6939d50933870904ebd0e81704658333.css
-rw-r--r--. 1 root root 611471 Sep 22 11:52 /opt/gitlab/embedded/service/gitlab-rails/public/assets/application-1840f43fd20c30180b0599c214ddae7e6939d50933870904ebd0e81704658333.css

Another CSS file in the same directory loads fine:

# ls -l /opt/gitlab/embedded/service/gitlab-rails/public/assets/print-68eed6d8135d858318821e790e25da27b2b4b9b8dbb1993fa6765d8e2e3e16ee.css
-rw-r--r--. 1 root root 620 Sep 22 11:52 /opt/gitlab/embedded/service/gitlab-rails/public/assets/print-68eed6d8135d858318821e790e25da27b2b4b9b8dbb1993fa6765d8e2e3e16ee.css

Here is what production.log has to say:

Started GET "/assets/application-1840f43fd20c30180b0599c214ddae7e6939d50933870904ebd0e81704658333.css" for xxx.xxx.xxx.xxx at  2016-09-23 09:37:11 -0400
Processing by ProjectsController#show as HTML
  Parameters: {"namespace_id"=>"assets", "id"=>"application-1840f43fd20c30180b0599c214ddae7e6939d50933870904ebd0e81704658333.css"}
Filter chain halted as :project rendered or redirected
Completed 404 Not Found in 22ms (Views: 0.5ms | ActiveRecord: 2.1ms)

Please advise.