Error message displays while posting and commenting

Why does this message display majority of the time when we try to publish posts or try to comment on a post?

Sometimes it's really frustrating as I write some lengthy posts and when I try to publish it this message pops up. So I have to copy all the content, open another tab, open bbs and paste it to publish it. It's the same for comments as well.

Why is this error occurring soo many times? I've heard the same complaint from many members across different boards in BBS.

Hopefully the devs will resolve this soon.

Thank you.