Hi,
We've recently encountered an issue where some customers will get an infinite spinning wheel when trying to view a request on the portal.

Once the page is refreshed it works fine until they close the window, they've tried several browsers and clearing the cache as well as connecting from a different device.
The below error appears in the browser console while the wheel is spinning.

I've checked the attlassian-jira.log but there's nothing at the time they get this error.
Any help you can provide would be appreciated.
Thanks,