You are using Mozilla Firefox and you are browsing the GMAIL website. Unfortunately, below error is coming out,
The page isn’t redirecting properly
Firefox has detected that the server is redirecting the request for this address in a way that will never complete.
This problem can sometimes be caused by disabling or refusing to accept cookies.
From the Mozilla Firefox browser, open Options > Advanced > Network. Click on Clear Now udner the Cached Web Content.
If Method 1 is not working, proceed to this method. From the Option > Privacy. Click on Show Cookies. Look for any GMAIL cookies and select Remove Selected. For quicker solution, just select Remove All.