It's not entirely clear what you're asking. The screenshot you've shared suggests that you opened your browser to 127.0.0.1:8080/apex... is that correct? What do you expect to see at that URL?
By default, Fiddler runs on 127.0.0.1:8888
. Did you change Fiddler's configuration to run on port 8080 for some reason? (Look inside Tools > Fiddler Options > Connections).
The Echo service page in Fiddler should only ever show if you directly navigate to the host/port combination that Fiddler itself is running upon.
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