Can't open Microsoft Teams' files tab

When I try to open the file tab in any team in Microsoft Teams, it won't load. For the application and Chromium browser, it says: There was a problem reaching this app and for Firefox it says: Something went wrong PrefetchFailure (RenderListDataAsStream (NoConnection)). As far as I know, this applies only to the file tab and nothing else. (File tab refers to MS Teams > Teams > (any team) > (any channel) > Files) I am using Arch Linux.