Eu tenho o mesmo problema de novo 
Talvez eu esteja mirando no commit errado?
Fetching and extracting https://get.discourse.org/discourse-assets/2025.11.0-75d61b40/production.tar.gz...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
100 9 100 9 0 0 25 0 --:--:-- --:--:-- --:--:-- 25
curl: (22) The requested URL returned error: 404
[assemble_ember_build] Failed to download prebuilt assets: Command failed with exit 22: curl