Launched a site recently, and the backoffice is breaking because it cannot find a custom CSS file. This file exists on disk in Azure but Smidge throws an exception saying it cannot find it. What would cause this behaviour typically? I'm at a bit of a loss so looking for pointers, even if they seem obvious 🙂

...no idea! Did this get sorted? If not, could you post the error?

Does it throw a 404? And you say the backoffice is missing the css file, how did you include it? Could it be case sensitive (if hosted on linux)

Have you by any chance appended a query string to the URL? I did that in the beginning with U9, and it works fine when running in debug mode locally, as files are served individually and directly, but it didn't work online at as Smidge doesn't (or at least didn't) strip the query string from the URL/path.

When you say " the back office is breaking because it cannot find a custom CSS file" is it a CSS file that is styling the back office? On that is used for the front end but is required for block preview?