i tried to continue the lesson but this bugs happened, the preview shown a looping of a browser made me cant continue my lesson, any helps please?
Hello and welcome to the forum community @inovafani !
Good try.
It appears the s is missing at the end of the variable.
It should be locations.
Wishing you good progress on your coding journey. 
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If you have a question about a specific challenge as it relates to your written code for that challenge and need some help, click the Help button located on the challenge. This button only appears if you have tried to submit an answer at least three times.
The Help button will create a new topic with all code you have written and include a link to the challenge also. You will still be able to ask any questions in the post before submitting it to the forum.
Thank you.