Launcher not available on site

I have built the launcher locally and as far as I can tell successfully uploaded it to our locally hosted server.
The issue is when I go to download it from our local server I get this error:
image
Any ideas as to what I have done wrong?

Info:
Server version: 1.0.8+202404161631
Build the launcher with PyEnv 3.9.13

How did you upload the launcher version? Through the web frontend?

I tried both the front end and the cmd line with the same result

@Innders any chance you know when this error may appear on the frontend?