macro compiler can detect the most of errors in templates.

Here is the list of errors that are considered to be fatal for a macro template:

• Unbalanced template, that has an opening tag in one template and does not have a corresponding closing tag in the same template file(in case if this tag requires a closing tag).
• Missing a required attribute for a tag
• Improper nesting of macro tags. For example you can't use item tag outside list tag
• Having two or more child tags of one parent tag with the same id attribute.
• Usage of none existing file with tag {{include}} or tag {{wrap}}.
• Usage of none existing filters in expressions
• Usage of none existing tags

macro compiler tells you about error with short message and points at the template file and line number where error occurred.

You can find all compiled macro templates in var/compiled/ folder of your application. If you have a template that throws a error at runtime then you may want to switch off template recompilation and insert debugger break command(e.g. debugBreak(), for dbg) at the problematic point of compiled template. In some cases just a short glance at the compiled PHP code is enough to understand the source of problem in template.