HAML syntax error "expecting $end"

I am trying to DRY up some code in HAML, but seem to have stumbled into a whitespace error that I can't quite wrap my head around.

I took the header and left navigation code and put it into their own respective files in the layouts folder.

In the regular view files, I placed this at the top:

= render 'layouts/header'
  = render 'layouts/left_navigation'
  / cent开发者_运维知识库er content column
  .centerContent.left.phm.rbm
    / start main center section
    / and the rest of the code goes below here

In the header file, I have:

/ main container area
#maincontainer
  / main content
  #maincontent.mhauto

And in the left navigation file, I have:

/ left navigation column
#leftNav.leftNav.left
  / a bunch of code goes in here
/ end left navigation column

Now, I would expect this to be equivalent to:

/ main container area
#maincontainer
  / main content
  #maincontent.mhauto
    / left navigation column
    #leftNav.leftNav.left
      / a bunch of code goes in here
    / end left navigation column
    / center content column
    .centerContent.left.phm.rbm
      / start main center section
      / and the rest of the code goes below here

But for whatever reason, it is not working correctly and instead gives me this syntax error syntax error, unexpected keyword_ensure, expecting $end while pointing to the last line in the file. What am I doing wrong? This is my first time using HAML, so this is rather perplexing to me.

By the way, it worked perfectly fine before I started DRYing up the code, so this seems to be a whitespace thing to me.

---

You have a render nested inside another render.. I think thats the problem:

= render 'layouts/header'
= render 'layouts/left_navigation'
/ center content column
.centerContent.left.phm.rbm
  / start main center section
  / and the rest of the code goes below here