WordPress FusionSlider在'http://'之后添加'http //'

I've got this kind of error in console:

GET http://http//example.com/wp-content/uploads/image01.jpg net::ERR_NAME_NOT_RESOLVED

I guess it is caused by FusionSlider but I can't even turn it off to see if it is the case. I've updated my webiste's URL and everything works great excepts Sliders.

I am currently working with Avada 3.9.3 and WP 4.4.8 I can also see that my favicon URL is wrong - it is also http://http//example.com/.../

What should I do to fix this error?