This error pops out when the laser head detached from the rods and the machine will stop working. In older version of FLUX Studio, this error were rendered as "Laser head tilted".
The detection is being too sensitive now since some of the users reported that it will be triggered every 2~3 minutes. We will deliver a solution in soon, but you can try a temporarily workaround.
(1) Detach the laser head from the holder by pressing the side button
(2) Place a piece of tin foil on 4 golden dots
(3) Press the side button and put the laser head back
(4) Good to go