Sorry, I’ve been doing some particularly heinous tax filing this season, and nearly forgot about your inquiry.
I noticed you got a blocked API request due to CORS header missing.
First, I just spotted this thread:
But usually it’s an issue with some sort of ad-blocker, security plug-in, or firewall that is manipulating headers.
And, in some cases, it’s you’ll see ‘null’ or ‘undefined’ errors due to the indexeddb becoming corrupted, on which case you can clear that. (Press F12, click on the Application tab, find indexeddb in the left panel, expand it to reveal wkof.file_cache, right-click on that and Refresh. Then reload the page).