There is an error when .scss file is being compiled. I'm not unfamiliar with HTML/CSS, but .scss is totally new to me, so I have no clue how to fix this. Any solutions or hints are greatly appreciated.
I saw that the error happens in map functions of SCSS. The thing is that there isn't any SCSS compiler for PHP that fully support SCSS 3.3. So I'm afraid that latest Materialize might be using SCSS code which isn't fully supported yet.
I suggest you looking into
and if there isn't existing issue on it, create one to help the author to prioritize development towards the most needed features.
Alternatively you may want to use older version of materialize or compile it beforehand.