Quote marks appearing below Full Width Easy Slider

I have just updated to the latest version fo Enfold 4.7.6. There seems to be an odd problem with the Full Width Easy Slider. For some reason there seem to be an extra ” below the slideshows. See this example:

I have looked through the raw code using safari’s inspect element and can see this is where it is occurs, at the end of the li before the closing tag.

<li class="slide-4" style="visibility: hidden; z-index: 2; opacity: 0; transition: none; transform: translateZ(0px);"><div data-rel="slideshow-1" class="avia-slide-wrap "><img src="https://colinwalton.co.uk/wp-content/uploads/2020/07/Trees-Pattern-Design-J-0-0-30pc-37-plus-chair-1500x630.jpg" width="1500" height="630" title="Trees Pattern Design J-0-0x30pc-37 plus chair" alt="Trees Pattern Design J-0-0x30pc-37 plus chair" itemprop="thumbnailUrl" style="left: 0px;"></div>"</li>

It isn’t anything to do with the text on my page, as exactly the same now appears after all of my Full Width Easy Sliders.

Hopefully you can see the problem and find a fix? Although on full screen it looks tiny, when shown on a mobile screen it is very obvious and takes up space too, shunting the text down.