When creating a new page/post, I can’t add images using the “Add Media” feature.

The image selected does not load on the editor. Google Inspect reveal the following error:

POST http://stss.org.sg/wp-admin/admin-ajax.php/load-scripts.php?c=1&load[]=hoverIntent,common,admin-bar,heartbeat,autosave,suggest,wp-ajax-respons…:445  404 (Not Found)

Have anyone encountered similar issue?

WordPress Version: 4.7.4


Read more here: WordPress unable to add Image to Page/Post


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