Where it was being blocked for me:
Heads up! ZenMate Web Firewall blocked this site from loading as it's classified under Tracking. hxtps://d3plfjw9uod7ab.cloudfront.net/e8af8301-45e2-41c6-9212-9421ce1b1dc7.js
Part of hxtps://sparrow.cloudflare.com/api/v1/event tracking
Tracker Blocks # Blocked here Global block Remove from Trackers
Amazon CloudFront 410
Suspicious: Mark as Tracker
-virustotal.com
-adtidy.org
-adguard.com
polonus