[2004] [nuxt] Error while initializing app DOMException: Failed to execute 'appendChild' on 'Node': This node type does not support this method.

I'm having a lot of trouble getting my dev environment to work in production. The latest error I'm receiving is [nuxt] Error while initializing app DOMException: Failed to execute 'appendChild' on 'Node': This node type does not support this method." on a specific page when I reload the page ( don't have it while navigating).

<template>
  <div class="ui two column stackable grid">
      <div class="ten wide column">
        <div class="ui row requirements">/div>
      </div>
  </div>
</template>

The very strange thing is that if I remove the class "ui row requirements", that I don't receive the error anymore. Which results into :

<template>
  <div class="ui two column stackable grid">
    <div class="ten wide column">
    </div>
  </div>
</template>

I just use npm run build & npm run start to start the app in production on my live server. Doing this on my local PC doesn't give me this erorr. Checked both npm, nodejs version & installed packages and they are all the same on both my PC and the live server. For what it matters, the live server uses nginx (https://engintron.com/). I've searched the whole day and can't figure this one out.