I'm getting this error from my app within my store and I'm not sure. I've been following the Node js and React tutorial documentation and everything has been fine, up until this point.
This is what I found in the console.....
Following up from yesterday, after my ngrok session expired, I re-authenticated my app in my store admin today with a new App URL and now everything is working. I'm not sure why that's the case, if anyone has incite, would you mind sharing?