upload image not displaying in the editor
One possible cause, ajax response in not valid JSON. Check if there is anything other then JSON in browser console. Share your site link if you don’t know about console.
Disable PHP error reporting.
Sukdeb_Biswas commented
got the problem. it’s CKEditor for wordpress plugin
http://goo.gl/t5Flxh
This question has an image but not displaying. I uploaded the image while i’m asking the question, but didn’t appear. then i added the link of image manually in the metabox, still no result