diff --git a/angular.json b/angular.json
index c1275f42d..036390079 100644
--- a/angular.json
+++ b/angular.json
@@ -14,6 +14,9 @@
         "build": {
           "builder": "@angular-devkit/build-angular:browser",
           "options": {
+            "allowedCommonJsDependencies":[
+                "chart.js"
+            ],
             "outputPath": "www",
             "index": "src/index.html",
             "main": "src/main.ts",
@@ -46,7 +49,6 @@
               },
               "outputHashing": "all",
               "sourceMap": false,
-              "extractCss": true,
               "namedChunks": false,
               "aot": true,
               "extractLicenses": true,