Oh dear, this is the problem with setting a game in such away. Usually, the errors can be found in the file. However, because this game required being connected to Patreon to access the full range of the game it creates much greater issues.
Alright I'll try to explain, the URL is a false one. doesn't exist, so it cannot send the request.
This can happen in one of two ways.
1) Encryption failure: the game is reading the encryption URL rather than the actual URL. this is very common when you attempt to integrate an offline program with online while keeping both.
-This is solved on their end, by either making the game fully offline (which would require removing the paywall because it would have to carry out all operations within itself.) OR make the game fully online, which again they will not likely do because it would require reprogramming the entire game as RPG maker is not an option, and flash is dead.
2) Corruption fault: This is more difficult because it can only be solved on your end. Something occured with the download, the extraction process, or the original upload.