Using twig templating language. It gives you error messages, but it only tells you the error of the line in the twig template. This is ok until you go to that line and it calls a twig function, which goes off to a load of different classes. Why not tell me the exact class where the error is, or even the line number in the class. Instead you have to unpick it until you find the bug yourself!

Am I missing something? Or is this just the way it works?