Robot Vacuum: white lights blinking

Came back from a week out of town to find my trusty (?) Wyze robot vacuum in a weird state - both lights on the top blinking in white.

says

  • Blinking white light: Vacuum is entering WiFi configuration mode.

Huh? How did it get into that mode? And how do I get it out of it and back to work? Would like to avoid having to go through the initial setup all over again.