This is a poor course.. and what am I missing?

Hi all.

Firstly, this course is really poor. I have liked Andrews teaching methods in previous courses, (although as a fellow Englishman, I wish he'd say 'roots' instead of 'rowtes' :D).

I have followed through the course so far, and have answered the questions easily, but sometimes I find that I haven't understood the last 2 minutes of what Andrew is saying. But I am hoping that if I watch this course several times, I will pick up more from each viewing.

I have found that this course, in many places, I am typing and looking at my output, and listening to Andrew who isn't saying everything he does. (ie: in one video he says "and if we look into our RENDERER file", whilst he opens the ROUTER file. And each amendment to the code is fast, and not necessarily explained correctly (ie: "you may need to delve deeper into this").

But here is where I am stuck. This is my code (run locally from my machine, ie. not using workspaces):

function home(request, response){
  if(request.url === "/"){
    if(request.method.toLowerCase() === "get"){
      response.statusCode = 200;
      response.setHeader('Content-Type', 'text/html');  
      renderer.view("header", {}, response);
      renderer.view("search", {}, response);
      renderer.view("footer", {}, response);

      response.end();
    }else{
      request.on("data", function(postBody){
        let query = queryString.parse(postBody.toString());
        response.write(query.username);
        response.end();
      });
    }
}

This function throws this error:

$ node app.js
C:\Users\Admin\Dropbox\Web Design\TreeHouse\NODE.js\dynamic-site\router.js:109
});
 ^

SyntaxError: Unexpected token )
    at createScript (vm.js:56:10)
    at Object.runInThisContext (vm.js:97:10)
    at Module._compile (module.js:542:28)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
    at Module.require (module.js:497:17)
    at require (internal/module.js:20:19)
    at Object.<anonymous> (C:\Users\Admin\Dropbox\Web Design\TreeHouse\NODE.js\dynamic-site\app.js:4:14)

Any suggestions, please?? I'm sure it is just a "typo", but i "cannot see the wood for the trees"..

Thanks in advance