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![David Aguirre](https://secure.gravatar.com/avatar/26dace0bf04d3378a381422c7a6908ff?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
David Aguirre
8,170 PointsWorkspace unavailable when I access port 3000
Workspace Unavailable This is a preview link for a Treehouse Workspace that is not currently active.
If you are the workspace owner, you can launch it again via the Treehouse site.
2 Answers
![KRIS NIKOLAISEN](https://secure.gravatar.com/avatar/65d74a723997b41a80d2d909c6e06960?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
KRIS NIKOLAISEN
54,969 PointsDid you enter node app.js
in the console prior to the preview?
treehouse:~/workspace$ node app.js
Server running at http://<workspace-url>/
![Joakim Rylander](https://secure.gravatar.com/avatar/6decb87e4050ad4e20f79af96bdd6496?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
Joakim Rylander
4,821 PointsYes typed in the command to execute the server in Node.js.
Server running at http://<workspace-url>/
/home/treehouse/workspace/router.js:18
const username = request.url.replace("/", "");
^
ReferenceError: request is not defined
at Object.user (/home/treehouse/workspace/router.js:18:20)
at Server.<anonymous> (/home/treehouse/workspace/app.js:11:12)
at emitTwo (events.js:126:13)
at Server.emit (events.js:214:7)
at parserOnIncoming (_http_server.js:660:12)
This is what happens to me, even though using Treehouse own workspace.
![jb30](https://secure.gravatar.com/avatar/681668d7cc4c5486851384a0feddda37?s=60&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
jb30
44,806 PointsIs request
a parameter of the function, or did you use req
?