Two Different Errors Showing When Trying to Access Outlook for Web (cannot parse / response received by service worker...)

This just started happening a couple weeks ago, but it has gotten more frequent in the last few days and I can't seem to figure out how to fix it.

When trying to access Outlook in Safari for work, I can usually login without any issue and see my inbox, but then a bit later when I try to view any email, I get: Safari can't open the page "https://outlook.office.com/owa/". The error is: "cannot parse response" (NSURLErrorDomain:-1,017)

I close out Outlook and I clear website info/cache and restart Safari and can login still, but once I'm logged in, if I try to view any email, the same thing happens again.

If I get the error mentioned above, I will try to refresh the page just to see and that's when I get this error: Safari cannot open page. The error is: "Response served by service worker is an error" (WebKitInternal:0)

Again, no clue why this is happening, especially since it isn't consistent and it's only happening in Safari, so I'm hoping someone out there has had this issue or knows what could possibly be causing it because it's making work quite difficult :)

macOS 15.1.1

Safari 18.1.1

MacBook Pro 2021

Hopefully I have provided enough info, but if anyone needs more, just let me know.

Thank you!

Nicole