New error with external API calls

Hello,

My site makes extensive use of external APIs. All were working fine an hour ago. Now I get a persistent n.onreadystatechange error.

Very similar to the issue described here: https://www.wix.com/velo/forum/coding-with-velo/external-api-calls-failing

Screenshot below from chrome console:

API calls made from back end web modules. All other Velo code seems to be working fine. Any help gratefully received.

Luke

This has fixed itself but would love to know what caused it and if there’s anything I can do to avoid

Edit: it has come back again. Seems to sometimes happen when I republish the site. It’s very disruptive