Teams Web Browser Version

Hi, for 2 days now I am having trouble entering calls, making and even to receive them.
Everything was normal and then just started appearing the error as seeing on the screenshot. Every time I tried to join a call or making one... I've tried using a different browser (Chrome and Firefox) but the error persists.
Does anyone know a solution for it? 
PS: I can't use the desktop app, so using the Web version is my only option. 

Thanks.