Guessing here. Perhaps you were not logged in to your account when you clicked send. Accounts often log out automatically.

I work around this by copying the work to clipboard before pushing send. Before starting a new post, check to be sure the login is current. If you get an error after pushing send, sometimes you can use the back button to rescue the post. I rarely lose a post now, despite occasionally getting errors when sending.

Good luck with future posts.

I have to do the same when doing posts.

If I’m logged in for while but kind of inactive because I’m doing something else, come back to post I started and hit send, I get that error sometimes. Sometimes just logging out and logging back helps and then type and send your message help. Because as someone said you technically may not be logged in.

I am logged in because I always sign in. Thanks for the support.

@rmb, you could be right about that. I will pay more attention to it. I guess I could get logged out.

I copy everything now before I try to post it

I have a lot of trouble postimg on boards all the time now

This happens to me on some other sites sometimes too. Not the same error code but similar concept where being logged in eventually times out, so you have to log back in. It’s usually a kind of security measure. Not sure if that’s happening here but seems similar.