Error connecting sass mixin. Error: Undefined variable: "$header". Error: undefined variable - what does it mean?

Question

Sass

Gulp throws an error when connecting a mixin to one of the classes.

I connect the mixin to the .owl-item__title class 181 pages

I connect the mixin to the .owl-item__title class on page 55

Mixins are connected to the main sass

file File with mixins

I can't understand why it gives an error?!

Answer 1

you have a $header variable in _vars perhaps? it's below owlcarousel.sass