This plugin has worked flawlessly for us up until a few days ago.
Now every time someone votes and then tries to claim the reward in-game with /votereward it crashes the server.
Nothing has been changed on our end in config.json.
The reward players get in-game (when it worked) is Element:
I tried spawn in Elements on server as admin just to be sure that still works so it isn't a game issue but a plugin or voting site issue.
Here is a screenshot from a server crash:
It is a great plugin when it works, thanks for making it!