Asset Configuration

Does anyone know how to troubleshoot this i have config.asset_host = cdn.example.com in my production.rb but my asset files are in my digitalocean spaces. The problem is that my website css and js is now broken. and i just see cdn.example.com/assets/css/all.-4344433343.css which is not found in my spaces

Tried every means to fix it but can’t

Any help would be appreciated thanks