How do I fix wp-admin error when exporting reusable blocks?


I am having trouble with the export to json feature of the reusable blocks shown below.Export to JSON feature

I am getting the following console errors after pressing the export to json link:

  1. Access to fetch at ‘’ from origin ‘’ has been blocked by CORS policy: Request header field x-wp-nonce is not allowed by Access-Control-Allow-Headers in preflight response.
  2. GET net::ERR_FAILED
  3. Uncaught (in promise) {code: ‘fetch_error’, message: ‘You are probably offline.’}
    enter image description here

It has been a while since I have used, so I am relearning some things and just wondering if I have done something wrong or forgotton a really basic step. I am using a test site free site provided by, I have looked for answers but I have not found anything useful yet.

Duncan Brain 10 months 2022-03-24T13:50:58-05:00 0 Answers 0 views 0

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