Starting Point - Oopsie

So I was trying to this one on my own and I stumble upon something which went I was block and went through the walk through didn’t see being talked about. Maybe someone can explain to me what it is?

Basically when I had analyzed with burpsuite I stumble upon the login page but there was something aswell called success.txt inside there was a hash that i run through hash id with seems to be md5 I’ve tried to crack it with john and hashcat and lose patiences when I was one hour in, maybe because I was in a VM? Anyway after two days I went and looked at the walkthrough and saw nothing about the md5 or success.txt?