Our IT are aware of an issue with the most recent update of Safari that leads to a refresh loop when loading into a page.
Currently, the only workaround available is to disable cross-site tracking and Block all Cookies. Then you will need to clear your cache, close out of all windows, before logging back into the site. That should resolve the error and prevent the refresh loop from occurring again.
At this time, IT are waiting on Apple to push out an update to Safari that will resolve this error, but we don't have a timeline quite yet.
We apologise for the inconvenience, however this is outside our control at this time. Another option would be to use another web browser.