WordPress add media HTTP error

Solution:1

I think problem may be when you upload an image, there is a chance that your comments will show in the response coming from ajax which causes error to show. I have been through the same problem and find that my comments are showing in the response.when i removed it images are uploading nicely.

Solution:2

If you’re still getting the HTTP Error, ask your hosting provider to disable the PHP module imagick- it fixed it for me.