I CAN’T PUBLISH NEW POST

I am having the same problem. I can write new posts, and edit new posts, but when I try to save, save and edit, or publish, it only takes me to a blank page and will not even save it as a draft. My website:

https://www.ittp.org

I have the same problem on a local installation.
I write it up, click publish and it takes me back to the manage post page as if it was successful- except its saving as a draft, and it won’t let me edit. It tells me “You attempted to edit a post that doesn’t exist. Perhaps it was deleted?”… nope. Still listed.

I checked out my DB and its recording the post title, saving the post as a draft (even though its supposed to be published) and doesn’t save anything else.

I’m having the same issue. It actually posts them, but I get the message, “You attempted to edit a post that doesn’t exist. Perhaps it was deleted?”

In another thread, someone suggested that the problem was a non-responsive ping service. But I’m not sure how to find out which one is non-responsive. Any ideas?