I am having a similar issue with calculate anything not working: here is the issue I see in the debugger:
ERROR: Calculate Anything[Script Filter] JSON is missing expected keys; items, variables or rerunafter:
{"items":{"0":{"title":"The requested URL returned error: 401","valid":false,"arg":""},"rerun":false}}
I have checked to resolve dependencies and my PHP is up to date, as well as my Fixer and Coindesk APIs. It seems to run into this issue whenever I try and calculate anything at all.