app/template/default/Block/gtag_m.twig line 1

Open in your IDE?
  1. <!-- Google Tag Manager -->
  2. <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
  3. new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
  4. j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
  5. 'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
  6. })(window,document,'script','dataLayer','GTM-5L8LV4D');</script>
  7. <!-- End Google Tag Manager -->