Where are the robots

Description

Can you find the robots? https://jupiter.challenges.picoctf.org/problem/56830/ (link) or http://jupiter.challenges.picoctf.org:56830

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Steps :

as it says robots i went for the http://jupiter.challenges.picoctf.org:56830/robots.txt

and saw this

User-agent: *
Disallow: /1bb4c.html

so just https://jupiter.challenges.picoctf.org/problem/56830/1bb4c.html