I’ve been following the Slash GraphQL React Message Board tutorial. On the last step, after setting up the functionality to submit a post, and then writing a post and pressing submit, an Apollo Client error appears (screenshot attached).
I’m running the site on localhost. Other than this error, data is successfully queried and displayed in the app from the Slash GraphQL backend I set up. I’m not sure how to begin trying to make sense of this error, as it doesn’t seem to be coming directly from any of the code written in the tutorial.