SEO Warning For Duplicate Content Issue with Sharing Plugin

I wouldn’t really worry about this warning; one can add any type of random query strings to URLs on your site, with a plugin, when creating Google campaigns, newsletters, or even manually. Here are a few examples:
https://www.dadaas.com/transferring-domains-godaddy-namesilo/?foo=bar
https://www.dadaas.com/transferring-domains-godaddy-namesilo/?utm_source=google&utm_medium=cpc&utm_campaign=spring_sale

Luckily, every page on your WordPress site includes what’s called a canonical link to let search engines like Google know what the page’s real URL is. That’s why you won’t find that same page indexed multiple times in Google.

If you take a look at any of the pages above and view source in your browser, you’ll notice the following:
https://i.wpne.ws/kJAE
<link rel="canonical" href="https://www.dadaas.com/transferring-domains-godaddy-namesilo/"/>

You can learn more about canonical links here:
https://moz.com/learn/seo/canonicalization

I hope this helps!

Thanks, yes, this helps and I understand now that it is not a problem.