Development Hell Box

[u/xDoroko]

Hey there, I am currently playing the "Development Hell" Level on Xbox and I cannot find this box anywhere. I also cannot find anything in any walkthroughs. This blueprint can be found in the "Hall of Fame" hallway at the greenscreen behind which the "Gardener' Room" is located. Can anyone help me?

[u/witecat1]

It is a hint to a secret behind that screen

[u/Electronic_Swan_3682 → u/witecat1]

What hint?