Bad Requests

[Lohoris]

I was using this on a sheet years ago, I've opened it again and now I'm just getting 400 Bad Requests everywhere:

Error: Unable to retrieve results from Scryfall: Exception: Request failed for https://api.scryfall.com returned code 400. Truncated server response: {
  "object": "error",
  "code": "bad_request",
  "status": 400,
  "details": "You submitted an invalid request. HTTP requests to api.scryfall.com ... (use muteHttpExceptions option to examine full response)
scryfallSearch_	@ Code.gs:143
SCRYFALL	@ Code.gs:71

I've updated the code to the last one, but nothing seems to be changing - I've played a bit with the syntax of the request but also I'm getting no improvements.

Any ideas?

Thanks!