thanks for answer.
But I can't give up using canvas 6.x.
I've got some lead. Check it, please.
I installed add an external OwlCarousel.JS code on my website.
Then it's all working well.
Even canvas-6 carousel, which didn't work, also works.
I think there is a problem with the plug-in call method.
I hope you to check it more deeply.
https://bigbigchina-my.sharepoint.com/:i:/g/personal/k36058_office365svip_site/EbU-sO0TQqNBtWLoz5rMzLQBFFu92frkeU4JBQYCQ5rJkQ?e=oeM3jX
[ps]
I checked 5.x at "https://validator.w3.org" and also so many error But 5.x version is fine.
I would like to continue using the 6.x version.
ex)
<!-- External JavaScripts
============================================= -->
<script src="/_html/js/jquery.js"></script>
<script>window.scwJsPath = '/_html/js';</script>
<script src="/_html/js/functions.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/OwlCarousel2/2.3.4/owl.carousel.min.js"></script>
<script>
$('.owl-carousel').owlCarousel({
loop:true,
margin:10,
nav:true
})
</script>