Sass Compiling Error
style.scss 
"Undefined variable $abbr: _utilities/_cc.scss on line 110, at column 5
Call Stack:
#0 mixin cc-classes _utilities/_cc.scss on line 294
#1 import _utilities/_cc.scss style.scss on line 5"
gutenberg.scss 
"Undefined variable $abbr: _utilities/_cc.scss on line 110, at column 5
Call Stack:
#0 mixin cc-classes _utilities/_cc.scss on line 294
#1 import _utilities/_cc.scss gutenberg.scss on line 5
#2 mixin cc-classes _utilities/_cc.scss on line 294
#3 import _utilities/_cc.scss style.scss on line 5"