Each loops has a bug

#1

I cannot get passed this chapter because if I enter the code it says the following error:
Cannot read property '1' of null

In this exercise:
https://www.codecademy.com/en/courses/learn-sass/lessons/functions-and-operations/exercises/each-loops?action=lesson_resume&link_content_target=interstitial_lesson

Can someone help me. If I press get the code it gives the error something is wrong in the top left corner.

This is my code:

$list: (orange, purple, teal);
@each $item in $list {
  .#{item} {
    background: $item;
  }
}

#2 

$list: (orange, purple, teal);
@each $item in $list {
  .#{item} { 
    background: $item;
  }
}

you just missed $. ( .#{$item} )

#3

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