WordPress - Too many jQuerys are loading
– Empty space, where the slider should be.
– Slider doesn’t switch away from first or second slide.
Press F12 and refresh your page, then click on the script tab.
Open up the list of the scripts, and look for jquery.js, jquery-min.js or with the version number in them.
If you have more in there, then it will be probably manually written in your header.php file of your theme, so look for that code, and comment it out, like this:
<ol><li><!-- <script src='//code.jquery.com/jquery-1.11.0.min.js'></script> --></li></ol>
But it also can be, that a plugin is calling it in.