Root level logger middleware should be active issue

My code gives the required result when checked in logger using glitch, yet the fcc say that the middleware should be active. I dont understand what it means. I tried using repl as well but same issue persist.

app.use(function (req,res,next){
const string=req.method+" “+req.path+” “+”-"+" "+req.ip;

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Challenge: Implement a Root-Level Request Logger Middleware

Link to the challenge: