Jade template engine - issues with indenting??

Jade is picky when it comes to tabs or spacing for indentation. If you mix the two, that is tabs with spaces, in your jade code then you'll get an indentation error.

If you're using sublime text, on the bottom right corner you'll see the 'tab size' button. If you click on that button you'll see the options to either convert indentation to tabs or spaces. Simply select your jade code and select one of those two and that should fix your indentation errors, it always has in my experience at least.

Furthermore, if you highlight your code you can tell whether you have an indentation of a space or a tab. An indentation of a space will show a dot to the left of your indentation, and an indentation of a tab will show a straight line.

As for the other error, "Cannot read property 'description' of undefined" I'm not entirely sure, you'll have to post your code.

"Cannot read property 'description' of undefined" happens when your trying to access the property of the object that is not defined

var x = undefined
x.y "Cannot read property 'description' of undefined"
var x = {}
x.y // Will not throw undefined error
//To fix use
var x= post || {}