Issues with icon font generation

gulpfile.js

'use strict';

var gulp            = require('gulp'),
    iconfont = require('gulp-iconfont'),
    iconfontCss = require('gulp-iconfont-css');

var config = {

  ICONS: {
    src      : 'sass/app/components/icons/svg/*.svg',
    build    : 'build/assets/css/fonts/',
    fontname : 'icon'
  }

}

// ICONS ----------------------------------------------------------------------
gulp.task('icons', function(){
  gulp.src( 'sass/app/components/icons/svg/*.svg' )
    .pipe( iconfontCss({
      fontName: 'icons',
      path: './sass/app/components/icons/_icons-template.scss',
      targetPath: '../../../.src/sass/app/components/icons/_icons.scss',
      fontPath: './fonts/',
    }))
    .pipe( iconfont ({
      fontName: 'icons',
      fixedWidth: true,
      appendCodepoints: false
    }))
    .pipe(gulp.dest( 'build/assets/css/fonts/' ));
});