Magento 2 - Page Builder Media Gallery not loading - “You entered an invalid Secret Key. Please refresh the page.”

Question

If I add a media node to the page builder and try to select an image from the gallery, then nothing happens. Normally the gallery should load.

I get this in the network console

https://company.de/backendlogin/cms/wysiwyg_images/index/key/095a7a5f8e56bbf90e8337f93695509fa2e57b0863e15518e17b60f110f3779b/target_element_id/BCP3YMC/store/1/type/image/?isAjax=true&current_tree_path=d3lzaXd5Zw--
    
{"error":true,"message":"You entered an invalid Secret Key. Please refresh the page."}

I flushed the cache and deleted all browser cookies, but it does not help.

The project is in production mode.

Answer 1

May be your secret key got expired, please use postman to test if your API and secret key is working properly there and you are getting proper JSON response.