Installing Edge through cmd prompt


So I am following this artile, where you can install the Edge extension through the cmd prompt and it will install the extension and enable it without the user being prompted:

So my question is, this way of installing will only affect the group policy of Edge and nothing else correct? After I did these steps a coworker sent a message during a meeting and I saw this:


So I just wanted to make sure these error is not related to the steps in the article.
This is the article I followed: Extension for Microsoft Edge (