diff --git a/angular.json b/angular.json
index f2f5a7e70..15f6a3062 100644
--- a/angular.json
+++ b/angular.json
@@ -19,7 +19,8 @@
             "allowedCommonJsDependencies": [
               "angular-slickgrid",
               "jquery-ui-dist/jquery-ui",
-              "excel-builder-webpacker"
+              "excel-builder-webpacker",
+              "stream"
             ],
             "assets": [
               "src/assets",
diff --git a/package.json b/package.json
index b037f1972..9bd6e853c 100644
--- a/package.json
+++ b/package.json
@@ -175,10 +175,11 @@
     "run-sequence": "^2.2.1",
     "sass": "~1.32.13",
     "standard-version": "^9.3.0",
+    "stream-browserify": "^3.0.0",
     "ts-node": "^10.0.0",
     "tslib": "^2.2.0",
     "typescript": "~4.2.4",
     "yargs": "^17.0.1",
     "zone.js": "~0.11.4"
   }
-}
\ No newline at end of file
+}
diff --git a/src/polyfills.ts b/src/polyfills.ts
index 71c74e185..bc274780c 100644
--- a/src/polyfills.ts
+++ b/src/polyfills.ts
@@ -20,13 +20,13 @@
 
 
 /** IE11 was throwing console errors without these (cannot find "includes") */
-import 'core-js/es7/array';
+// import 'core-js/es7/array';
 
 /** IE10 and IE11 requires the following for NgClass support on SVG elements */
 // import 'classlist.js';  // Run `npm install --save classlist.js`.
 
 /** Evergreen browsers require these. **/
-import 'core-js/es6/reflect';
+// import 'core-js/es6/reflect';
 
 /** Support Custom Event */
 import 'custom-event-polyfill'; // npm install custom-event-polyfill
diff --git a/tsconfig.app.json b/tsconfig.app.json
index 050a1cbf4..ab1179ef2 100644
--- a/tsconfig.app.json
+++ b/tsconfig.app.json
@@ -1,5 +1,5 @@
 {
-  "extends": "../tsconfig.json",
+  "extends": "./tsconfig.json",
   "compilerOptions": {
     "allowSyntheticDefaultImports": true,
     "outDir": "../out-tsc/app",
@@ -11,12 +11,13 @@
     "paths": {
       "jszip": [
         "../node_modules/jszip/dist/jszip.min.js"
-      ]
+      ],
+      "stream": [ "./node_modules/stream-browserify" ]
     }
   },
   "files": [
-    "main.ts",
-    "polyfills.ts"
+    "src/main.ts",
+    "src/polyfills.ts"
   ],
   "include": [
     "src/**/*.d.ts"
diff --git a/tsconfig.json b/tsconfig.json
index 6e2803c28..4b970ac67 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -28,7 +28,8 @@
     "paths": {
       "jszip": [
         "node_modules/jszip/dist/jszip.min.js"
-      ]
+      ],
+      "stream": [ "./node_modules/stream-browserify" ]
     },
     "strict": true
   },