Ember build faield because of broccoliBuilderError

I'am on an ember project and I am trying to upgrade ember version from 2.8 to 3.5.0. But since I changed the version and also some several dependencies version I get this error :

enter image description here

I've tried to fix this with ember-cli-build file but the error persiste.

const EmberApp = require('ember-cli/lib/broccoli/ember-app');

module.exports = function(defaults) { const isPublicEnv = EmberApp.env() === 'public';

const app = new EmberApp(defaults, {

    'sassOptions': {
        includePaths: [
            'bower_components/materialize/sass',
        ],
    },
    'outputPaths': {
        app: {
            css: {
                design1: '/assets/design1.css',
                design2: '/assets/design2.css'
            },
        },
    },
    'ember-cli-babel': {
        includePolyfill: true,
    },
    'minifyJS': {
        enabled: isPublicEnv,
    },
    'minifyCSS': {
        enabled: isPublicEnv,
    },
    'fingerprint': {
        enabled: isPublicEnv,
    },
    'tests': !isPublicEnv,
    'hinting': !isPublicEnv,
    'sourcemaps': {
        enabled: !isPublicEnv,
    },
});

app.import('vendor/lib1.js');
app.import('vendor/lib2.js');

return app.toTree();

};

Any suggestion to resolve this ?