There was an error accessing the WP REST API error

I seem to see the following error message:

There was an error accessing the WP REST API. Instant Images requires access to the WP REST API via <u>POST</u> request to fetch and upload images to your media library.

I thought it could be an issue with a theme update but I reinstalled it and still see the error.

I disabled my security plugin (Security by Clean talk) but still see the error. I changed the theme away from Astra to Twenty twenty-two and I still saw the error.