These links are likely avatar images or usernames associated with comments on my blog posts and are causing the error because they don't have a discernible name, meaning they don't have text that clearly describes their purpose.
Is there a way to add an aria-label attribute to these links?
This error comes from your comment widget. It has nothing to do with wpDiscuz. The comment widget is generated by your current active theme. You should ask the theme developers to extend the widget links.
As you mentioned, the link selector is div.tzwb-content > ul.tzwb-comments-list > li.tzwb-has-avatar > a so it says the link creator is the tzwb.
wpDiscuz doesn’t have tzwb prefixes in classes.
In case you want to say thank you! 🙂 We'd really appreciate if you leave a good review on the plugin page. This is the best way to say thank you to this project and the support team.