Solution:

Follow the steps below to clear cache and cookies from Mozilla Firefox:

Mozilla Firefox 104 and higher

1. Click the Menu icon in the upper-right:
   
2. Click on History.
3. Click on Clear Recent History....
4. In the Time range to clear: drop-down menu, select Everything.
5. Check the applicable boxes for Cookies and Cache.
6. Click the OK button.
7. Close all Mozilla Firefox browser windows and restart it.