Repository Manager 3 annoying "Script Error (:0)" notifications

After upgrading to 3.22.0-02 I am getting an annoying “Script Error (:0)” notifications on the ui which I can’t get rid off. Nothing in the logs, and I can do everything I need to do.
Any ideas what this means? Thanx

Sometimes this is caused by something invalid cached in the web browser… so the first thing to try is clearing your browser’s cache, or using a private browsing window to bypass the cache.

Thanx, using a private browser window worked. It only seems to be an issue with Safari, as it works fine in Firefox and Chrome.