There is no ej2-base folder relative to this file, so that is an incorrect syntax/path. As you are already using @synfusion alias, I think you should prepend that to all such import statements, which are pointing to separate packages.
Top-level selectors may not contain the parent selector "&"
For example in this file: @syncfusion/ej2-calendars/styles/calendar/_layout.scss
ABAshokkumar Balasubramanian Syncfusion Team June 11, 2019 08:24 AM
Hi Janne Kurkinen,
Good day to you.
We have checked your provided styles code block reference at our end. For that code block, you have referred the inner level component styles in SCSS, there is no need for this case. You can follow the below help document to render our calendar component using Vue cli with SCSS concept.