problem on using brook ui

[Aronablade]

hi , sorry im a novice , i did everything but on the step that says run http server for brook i got confused :
http://127.0.0.1:8080
what does it mean ? i just copy pasted the codes into my vps , without change anything after enter code it shows listening to 127.0.0.1:... and doesnt go forward ,
can you explain to me from this step with more details ?

[txthinking-bot]

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