This problem is often going with a notice of socket_write() issues around line 1044 in Sources/AoChat.php
It means the bot has been disconnected or wasn't able to fully connect.

You first have to make sure your bot can be logged in using regular game or chat client. Try to send some tells and receive some to verify all goes ok. Also take this occasion to verify that the friendlist ain't full otherwise give it a clean.

That once done, and specifically if your bot uses some proxy account(s), also make sure those accounts are also loggable. If they are not, they could be either banned (then you'd need to contact support) or simply frozen & that explains why you obtain EOF error.

Note that recent Bebot versions are capable of self-defreezing on logon as explained into README ... but if for whatever reason that didn't fully work, you might have to do it manually by logging into https://account.anarchy-online.com/ and then visit /uncancel_sub page to reactive (repeat for each account).

Once any involved account is loggable and fully capable, you endly should be able to fix that error and log your lovely bot.