Cannot run sass task: missing in gulpfile.js when building ionic version 1 project

Hi,

I am trying to build a version 1 ionic project .

Using ionic build brings me the error message : Cannot run sass task: missing in gulpfile.js

How can i fix it ?

How can i build an android version of the app if i am using ionic-cli version 4 and the ionic project is version 1 ?

Did you end up finding a fix for this?