I want to insert the LinkedIn Follow Company Plugin, but only inject it, if the user has given consent. So instead of putting in the script tags directly, I have a banner, asking for consent and if the checkbox is checked the following function runs:

function injectLinkedin() {
  var linkedin_container = document.querySelector('#linkedin-follow-plugin');

  var script = document.createElement("script");
  script.setAttribute("src", "https://platform.linkedin.com/in.js");
  script.setAttribute("type", "text/javascript");
  script.setAttribute("async", "false");
  script.textContent = 'lang: de_DE';
  script.onload = function(){
      console.log('li');
  };
  linkedin_container.appendChild(script);

  var script2 = document.createElement("script");
  script2.type = "IN/FollowCompany";
  script2.setAttribute('data-id' , '1234');
  script2.setAttribute('data-counter' , 'bottom');
  script2.onload = function(){
    console.log('li2');
  };
  linkedin_container.appendChild(script2);
}

But that way LinkedIn responds with an error 500 for https://platform.linkedin.com/in.js

Don't see why/how linkedin can see how the code gets loaded. Putting in the script tags directly it works fine. And, strangely, this error is not on my local machine but only on the live server.