jakaskerl
The model is only 140kb. I tried using the provided API to try to get more insight into what's happening and I got an error:
Conversion failed with status code: 500
Error message: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<title>500 Internal Server Error</title>
<h1>Internal Server Error</h1>
<p>The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application.</p>