Dec 28 2020 02:57 PM
Dec 29 2020 12:19 AM
I think that this is an temporary error or a problem with your Teams application. If it doesn't work today try to clear cache and try again.
You can also try from Teams web application https://teams.microsoft.com. If you are not able to get it from there you can (with help from an admin) get reports from Teams Admin Center http://admin.teams.microsoft.com.