Strange text at top of page

This is what I get at the top of the page. Where does it come from and does anyone know the best way to fix it?


Skipto content Features Business Explore Marketplace Pricing This repository Sign in or Sign up 643 4,044 3,277 opencart/opencart Code Issues 16 Pull requests 76 Projects 0 Wiki Insights opencart/upload/catalog/view/theme/default/template/common/header.twig 1768455 6 days ago @danielkerr danielkerr changed to getCookie('language') for all ajax calls. @danielkerr @JesseOC @jamesallsup 84 lines (83 sloc) 4.02 KB

oc version
and a link of your site

what have you done and this comes up?
do you install any extention?