that means you have reached your max sessions with the bot. sometime in my experience if the bot stops working it get lock up on the authentication server and u have to go to the site and kill the process of the bot.
i could be totaly wrong but thats what i do when i get that error.
Bot error after patch ,too
[16:26:43.602 N] Honorbuddy v2.5.9752.725 started.
[16:26:55.073 N] Logging in...
[16:26:56.753 N] We couldn't find a free WoW process to attach. Please login to game before starting Honorbuddy.
I have to restart the computer.
Also everything is normal with the old version
It's correct.
Login at Home Page - Buddy Auth Portal and kill your session.
Say whaaat? I dont have a acc there?
Then create one, using the same email that you used while you purchased your Buddy bot.