edit issue from frontend

https://paste.pics/a605158c80808a312b054ea5051f4882

https://paste.pics/7833dde46f0dea04df447e8885dfdf78

Hi

I’m having the following issue above

upon pressing edit, it has this issue.

however if you go in backend, posts, save the post in question. then go to edit, it allows editing.

If you reload, same issue again

And two more final questions:

how can a user delete their submitted post from the front end.

is it possible to enable a user to be able to edit another users post?

Happy to buy pro if we can fix the error above`