html valid

Great plugin! The only thing I can’t figure out is how to make the output to be valid html as per w3c validator:

Bad value http://www.facebook.com/sharer.php?u=http://mysite/2015/my-first-post/&t=My first post for attribute href on element a: Illegal character in query: not a URL code point.
…15/my-first-post/&t=My first post'></a> <a class='twitter'	target='_blank'…

Any thoughts?

Thanks!

https://wordpress.org/plugins/html-social-share-buttons/