You're using PageLines Framework, but have posted in the DMS forums, please refrain from doing this, as they're completely separate products. Therefore, I have moved your topic to the correct forum.
In regards to your issue, your problem is that you have the default slider images missing, i.e. they have been uploaded, this is giving 4 or 5 404 errors in the Browser console. You will need to fix this by uploading the images yourself or add your own images to your slider.
Also, I recommend you download PageLines Framework from GitHub, as it is the Premium version of PageLines Framework, whilst you're using the free version from Wordpress.org.
Please be aware that PageLines Framework is now considered legacy and will eventually be no longer supported. Therefore, I recommend you upgrade to DMS.