Custom Theme problems

Question

I just started to create a custom theme having as parent Magento/blank no when I try to deploy static-content I get variable @addto-color is undefined. How to debug this issue.

static structure

Vendor
--Theme
---web
----css
-----source
------- _themes.less //empty no css yet
------- _extend.less //empty no css yet

theme is registered and when I run bin/magento setup:static-content:deploy fails with

Compilation from source: 
frontend/Vendor/theme/de_DE/css/styles-l.less
variable @addto-color is undefined

looking on https://github.com/magento/magento2-samples/tree/master/sample-module-theme everything looks the same as my theme but on deploy no variables getting inherited

Answer 1

Ensure you are in developer mode:

php bin/magento deploy:mode:set developer

Delete all files/folders in:

pub/static/frontend
var/view_preprocessed

rm -rf pub/static/*
rm -rf var/view_preprocessed/*

then deploy your language specifically:

bin/magento setup:static-content:deploy de_DE

set file permissions of pub folder and sub-directories to 755:

find pub -type d -exec chmod 755 {} \;