169: Invalid @layout value

Valid values for a layout metadata declaration are blank, manual and auto. Your file assigns a different value though.

Solution

Make sure to assign one of the valid values to the layout metadata name or do not declare layout metadata at all. The valid values are:

blank: This results in a blank page, if the file is requested in a web browser.
manual: This prevents the Aneamal Translator from integrating files @header.nml, @aside.nml, @footer.nml, @look.css into the webpage automatically.
auto: This is the default behaviour. The Aneamal Translator integrates the aforementioned files automatically. You only need to assign this value, if you want the default behaviour despite a different value in a @meta.nml file.