Guild Wars 2

So Im a little confused as to what lasers it’s talking about since the only one that I can find are the homing missles that fire at you as you’re jumping around the JP
(Spekk’s Lab JP)
I coat myself with the ooze and let myself get hit by the lasers but nothing.
This is for the Juggernaut Legendary.

There are a bunch of lasers at the end of the puzzle when you are fighting the golems. After the golems are defeated the lasers also deactivate. There is a panel near the golems that triggers the start of the fight with the golems. You might have to wait for the JP to reset.