We can't see your code and the tests are fine. Please read this fully before creating a kata issue: https://docs.codewars.com/training/troubleshooting

returns a list of items without any elements with the same value next to each other and preserving the original order of elements

unique_in_order('AAAABBBCCDAABBB') == ['A', 'B', 'C', 'D', 'A', 'B']

You're not understanding what to do.

Please write in english and stop raising bogus issues. See https://docs.codewars.com/training/troubleshooting#post-discourse.

Olá Luca, o seu código apresenta um problema ao assumir que a variável 'b' possui apenas um elemento. Na verdade, 'b' pode conter múltiplos valores. Consoante você tem no seu código, você acessa apenas o primeiro índice da variável 'b'.

Not a kata issue, you are removing and checking zero equality at the same time, which can cause some values to be skipped.

Read this: https://docs.codewars.com/training/troubleshooting#expected-the-same

Not a kata issue.

Remove this line:

from solutions import zeros

From your code, indent x = 1 properly.