Do some more research and you will see what is possible. That is the whole error. With this answer the error goes away. A shop can do millions of turnover and never see the error again. How is this not helping? The alternative is to have a broken site, as the user cannot find the error as he already said he tried.

Ive had the error - that's what it says. Why do you think there is more. He never posted more. So dont bother trying to help anyone else coming to this page?

He pasted the whole error - Headers already sent error, for file pluggable.php on line 897 Thats what the error message is. No more. And in the absence of the chance to debug, dont try to hide it, so he can move on with his life? He'll be back down the road anyway...

It does not fix the headers being sent, but fixes the error message. The question was any ideas. Maybe it is not worth fixing the headers issue if it can be hidden so easily. Would you prefer this answer that fixes the error message so he can continue his list? He already said he cant find the error that is causing it. What do you want him to do?

this works & thus answers the question. If you dont like the application you could explain in a comment

why is woocommerce a tag if those questions are off topic?

This is a wordpress question that also applies to WP plugins. The answer is wordpress code. There are better wordpress answers out there but because it was closed the community cannot add to it. What was gained by closing it?

speak to your host

A simpler form of @mikes's answer without the image option - can replace lines 6-10 with: <a href="<?php echo get_term_link( $wcatTerm->slug, $wcatTerm->taxonomy ); ?>"><?php echo $wcatTerm->name; ?></a>