Hi,
Unfortunately, most of the errors listed there do not come from HikaShop or we can't do much about them.
Error Line 2, Column 92: duplicate specification of attribute "xmlns:fb"
…mlns:og="
ogp.me/ns#
" xmlns:fb="
ogp.me/ns/fb#
" xmlns="http://www…
✉
You have specified an attribute more than once. Example: Using the "height" attribute twice on the same "img" tag.
This comes from the facebook xmln attributes as they are not standard attributes of XHTML 1.0 Transitional.
Line 468, Column 80: document type does not allow element "div" here
…<div class="closebutton" onclick="return hs.close(this)" title="Close"></div>',
This doesn't come from HikaShop.
Line 749, Column 28: value of attribute "id" must be a single token
<div id="hikashop_product_5 Dalek_28_page" class="hikashop_product_page" itemsc…
This is because you have spaces in your product code, while it should not be the case.
Line 749, Column 84: "itemscope" is not a member of a group specified for any attribute
…" class="hikashop_product_page" itemscope itemtype="
schema.org/Product
">
These come from the microdata elements added by the microdata plugin. They are not standard XHTML 1.0 elements. The only solution, like for facebook, would be to not use the plugin adding them.
Line 857, Column 190: ID "hikashop_main_image_link" already defined
…is,{parse: 'rel'});return false;" id="hikashop_main_image_link"><img src="/med…
This is because you have variants and the main image of the variants have the same id for each one. We'll change that for next version.