Page never finishes loading

When I open https://gungy2.github.io/FiFish/ I see a beautiful loading screen.

Two errors are logged in my browser console, and the loading seems to continue forever:
```
Failed to load resource: the server responded with a status of 403 (Forbidden)
Uncaught (in promise) SyntaxError: Unexpected token 'S', "See /corsd"... is not valid JSON
```