Loud clicking sound and check mixer error



I am trying to start my first print, the print loads into the printer and gets to “filling tank”. The laser moves all the way to the left, and the tank gets pushed up and locked in. Then it makes a really loud “CLICK CLICK CLICK CLICK” sound and an error message pops up telling me to push the mixer all the way to the left.

As far as I can tell the mixer is properly positioned: it arms are facing left and clicked into the little notched on the tank. It seems to have locked onto the magnets.

The sound is like a CNC hitting the ends of it’s rails, but the LPU seems to be able to move back and forth freely.