This feels like it is a rookie error but I have had so much trouble getting this addin to appear that I am putting it out there to the community… (I have done addins in the past - tiles - but not recently)
I have some very simple code and all I want to do is add a constituent page button. Here is the outline of my code
However when I go to developer mode in the browser it shows two entries for “fetch-button”. The first is red (not sure why) and the second one is black i.e. a status of 200. However when I look at the html for the 200 it is pulling from the app.component level i.e.
The highlighted tags are app-root but should be fetch-button.
In my developer account I have the adding pointing to the following:

Happy to share other code/screenshots if that helps.
Thanks