resource blocked due to MIME type (“text/html”)

Hi,

I am getting these errors in FF web console on a number of sites that use the plugin. Similar errors in MS Edge when I checked. Chat does not load as a result.

The resource from “https://tawk.to/chat/xxxxxxxxx/default” was blocked due to MIME type (“text/html”) mismatch (X-Content-Type-Options: nosniff).

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://tawk.to/chat/xxxxxxxxx/default. (Reason: CORS request did not succeed). Status code: (null).

All was working until I did some updates and re-saved settings.

Please advise,

Thanks in advance, J