How to install mailer Lite pop up in the nuxt with this script extern ? Error window is not defined - vuejs2

Question

I want to install this popup on the nuxt.js application
My problem is?
if i want to add this script on my page is not work and the error is window is not defined
How I add this pop up to my applications Nuxt.js?
<!-- MailerLite Universal -->
<script>
(function(m,a,i,l,e,r){ m['MailerLiteObject']=e;function f(){
var c={ a:arguments,q:[]};var r=this.push(c);return "number"!=typeof r?r:f.bind(c.q);}
f.q=f.q||[];m[e]=m[e]||f.bind(f.q);m[e].q=m[e].q||f.q;r=a.createElement(i);
var _=a.getElementsByTagName(i)[0];r.async=1;r.src=l+'?v'+(~~(new Date().getTime()/1000000));
_.parentNode.insertBefore(r,_);})(window, document, 'script', 'https://static.mailerlite.com/js/universal.js', 'ml');
var ml_account = ml('accounts', '3587348', 'o8w2i6n0n5', 'load');
</script>
<!-- End MailerLite Universal -->
take my error
WINDOW IS NOT DEFINED
pages/document.js:16:
Object../pages/document.js
webpack/bootstrap:25:
__webpack_require__
pages/index.js:24:76
Module../node_modules/babel-loader/lib/index.js?!./node_modules/vue-loader/lib/index.js?!./pages/index.vue?vue&type=script&lang=js&
webpack/bootstrap:25:
__webpack_require__
webpack/bootstrap:25:
__webpack_require__
pages/index.vue:1:
Module../pages/index.vue
webpack/bootstrap:25:
__webpack_require__
async server.js:2289:21