[Plugin: J Shortcodes] [Plugin: Jshortcodes] Issues with W3C validation

This is only happening on pages that use jcolumns, so either I’m not understanding something or something’s broken. I get many variations on this W3C validation error:

document type does not allow element “h2” here; missing one of “object”, “applet”, “map”, “iframe”, “button”, “ins”, “del” start-tag

The mentioned element is not allowed to appear in the context in which you’ve placed it; the other mentioned elements are the only ones that are both allowed there and can contain the element mentioned. This might mean that you need a containing element, or possibly that you’ve forgotten to close a previous element.

One possible cause for this message is that you have attempted to put a block-level element (such as “p” or “table”) inside an inline element (such as “a”, “span”, or “font”).

You can see examples on this page: https://www.gorillamarketing.net/promotional-products/custom-usb-flash-drives/

And here’s the W3C validator: https://bit.ly/dF91vS

https://www.ads-software.com/extend/plugins/j-shortcodes/