HI @fuell.python !
Welcome to the forum!
It would be better to share your codepen link so we can see the error for our selves.
Also, make sure to keep the test suite in your code.
I’ve edited your post for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.
You can also use the “preformatted text” tool in the editor (</>) to add backticks around text.
See this post to find the backtick on your keyboard.
Note: Backticks (`) are not single quotes (’).