Bootstrap Accordion Card

I have a page in a SPA that I want to add the bootstrap accordion cards. I know I have to add it to the index page in order for the AppConnect code to be added in the head and in the appconnect folder but it is not done and I get this warning in dev tools:

Screenshot 2020-05-20 at 08.24.081293×95 10.4 KB

Is it a bug or am I doing it wrong?