CSRF state token does not match one provided.

Team,

I get this error.

CSRF state token does not match one provided., referer: https://www.facebook.com/

This is the code Im using. Is there something Im doing wrong.

/wp-login.php?loginFacebook=1&redirect=<?=$url?>” onclick=”window.location = \'<?=site_url()?>/wp-login.php?loginFacebook=1&redirect=\’+window.location.href; return false;” class=”btn btn-block btn-social btn-facebook”>

https://wordpress.org/plugins/nextend-facebook-connect/