Error 3000 - Neato does not start moving

My Neato Botvac 80 has been working well. Today I changed its battery. It was working well until now. It gets ready to start but then stops and give me the message “press OK to continue (3000)”. I press OK and it tries to get ready but again stops and sends the same message.

What did I do? I cleaned its laser area with a cotton tip and pressured air too. Nothing. The disk moves though.

Any suggestions on what could happen but mainly how to fix it?

Thanks!