Raw.githubusercontent.com always giving 404

I can’t seem to get any data via raw.githubusercontent.com

For example, this url was working yesterday…

https://raw.githubusercontent.com/RicardoNiepel/Azure-PlantUML/release/2-1/dist

It seems you can link to files but not directories on raw.

https://raw.githubusercontent.com/RicardoNiepel/Azure-PlantUML/release/2-1/dist/AzureC4Integration.puml