Removing Facebook tags from querystring

Hi...I had some VB stuff written for me ages ago. All works fine. But now, when pages from this site are put on Facebook, the Facebook links always append "?fbclid=" and then a massive long string.

So my URL may from
http://www.mysite.com/thepage
to
http://www.mysite.com/thepage?fbclid...__tn__=-UK-R&c[0]=AT3udzUg6o1Ni-LiWLzfiw1-Fd5nTKf5KLk2o5SYdjfhid3LhpLD7bv7m2pXPyp1ng2x5t-l_a39TtETb7mP4RLzCv1iXK97tXruTpvTfOMJB1hG09ElsmXi6ROrEV-3dOr-DqG4ChB3omzjFtUibtjEHdVyTk33ZGI28BlqNFspgA8i

And it causes my pages to throw an error.

Any help appreciated. I'm a real VB noob - I guess what I really need is a bit of script that replaces from ?fbclid= onwards and redirects to the proper URL?

Thanks if anyone is able to assist!