Show error if HearthstoneJSON fails to load

HearthSim / Joust

🍿 Hearthstone replays in your browser.

https://hearthsim.info/joust/

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Open jleclanche opened 6 years ago

jleclanche commented 6 years ago

If the HearthstoneJSON cards.json fails to load, the replay is continuously showing loading messages rather than showing an error.