The Steam Workshop Downloader is one such robust feature of the platform - here’s how to use it. Whether you want to talk to the developers about upcoming patches and mechanics, socialize with others that share a similar addiction to a relatively unknown indie gem, or stock up your shopping cart in preparation for the next massive sale, Steam offers more than most other shops are even interested in contending with. However the issue is *apparently* is being worked on by the developers of that website.Valve’s Steam is a feature complete platform that tends to be the one-stop-shop for many PC gamers. This is an issue on steamworkshop.download's end.

There are several games that are in the supported list but currently can not download the mods. We will no longer maintain a list of working games because ALL games are affected. Please only report issues that are from our script. All that we are doing is adding a button on steam workshop page that allows us to download mods that are on their servers, cached and all. Secondly, most game mods are cashed which means while you may download mods from the website it will download an older version. I have reported that issue on their public forums, and the administrators are saying that they are working on it.

The error seems to appear when the mod file is larger than a few Kilobytes (not sure exsatally how many kilobytes) This is STILL an issue on steamworkshop.download's end, we cant do anything about it.

Thanks to u/No_Climate7825 investigations it turns out the error 'Free Space Left' doesnt just affects all games but rather it depends on the size of the mod.

Steam workshop downloader working