The icons dont be loaded on my firefox
Try pressing F5 to refresh the page
Clear your Firefox cache:
From the History menu, select Clear Recent History.
From the Time range to clear: drop-down menu, select the desired range; to clear your entire cache, select Everything.
Can you also confirm that you can see them using another browser like Chrome.
I Found the error and fixed.
Just need add code below at .htacess
Header set Access-Control-Allow-Origin “*”
That would make sense as it sounded like a caching problem.
Thanks for posting the fix.